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CL Answer

Do any supplements, foods, or oils help reduce muscle pain, muscle cramps, or nighttime leg cramps?

Find out which supplements, and topical products such as magnesium creams, can help reduce muscle pain, leg cramps, and nighttime leg cramps, and which may worsen muscle cramps. Also, learn about vitamin and mineral deficiencies and common medications that can cause muscle cramps and nocturnal leg cramps.

Magnesium & Other Supplements for Muscle Pain & Cramps -- woman with leg cramp

CL Answer

7 Tips to Avoid Getting a Pill Stuck in Your Throat

Some pills can be difficult to swallow and can even become lodged in the throat or cause damage to the esophagus. Learn seven practical tips to help avoid getting pills stuck in the throat.

Pill Getting Stuck in Throat

CL Answer

Which supplements, foods or diet and lifestyle changes help relieve acid reflux (heartburn), and which worsen it?

Find out which supplements and foods can help relieve acid reflux, and which can make it worse.

Supplements Making Acid Reflux Worse -- Man with acid reflux pain

CL Answer

Which supplements and lifestyle changes improve sleep, and which cause insomnia?

Find out which vitamins may help you sleep and learn if any vitamins or supplements can cause insomnia.

CL Answer

Which supplements and foods help relieve constipation and which can cause constipation?

Find out which supplements can cause constipation, including iron, calcium, protein powders and drinks and others. ConsumerLab.com's answer explains.

Which supplements can cause constipation? -- Woman with gastrointestinal pain

CL Answer

Do any supplements help with restless legs syndrome?

Find out whether supplements or vitamins like iron, magnesium, vitamin E and others can help for restless leg syndrome (RLS). ConsumerLab.com's answer explains.

Supplements for Restless Legs Syndrome

CL Answer

Which supplements are best for seasonal allergies?

Find out which supplements are best for allergies and can help reduce seasonal allergy symptoms, including bromelain, curcumin, vitamin D, and CLA.

Supplements for Seasonal Allergies -- Woman Outside Sneezing

CL Answer

Do any supplements help for irritable bowel syndrome (IBS)?

IBS supplements may help reduce irritable bowel symptoms such as pain, diarrhea and constipation. Supplements include probiotics, melatonin, and flaxseed.

Supplements for IBS? -- Women With Stomach Pain

CL Answer

Which deodorants and antiperspirants are contaminated with benzene and which are not?

Benzene, a carcinogen, has been detected in over 40 spray deodorants, antiperspirants, and body sprays. Tests were conducted on brands including Axe, Bath & Body Works, Brut, Degree, Dove, Gold Bond, Right Guard, Secret, Speed Stick, Suave, Old Spice, Victoria's Secret and others. Find out which products contained benzene, and how much they contained.

Benzene in Spray Deodorant

CL Answer

Does Qualia Mind boost memory and mental function and is it worth cost?

Learn about the ingredients in Qualia Mind, whether or not we think the formula works and is safe, and if we think it's worth the cost.

qualia-mind

CL Answer

I take levothyroxine (Synthroid), a thyroid hormone to treat hypothyroidism. Are there supplements or foods I should avoid, or be taking, due to this drug?

Is taking certain supplements and hypothyroidism medications bad? Learn which supplements can interact with thyroid hormone medications like levothyroxine (Synthroid), thyroid hormone levels, and laboratory tests.

Levothyroxine (Synthroid) Supplement Interactions

CL Answer

My doctor warned me that red yeast rice can cause liver damage - is that true?

Can red yeast rice cause liver damage? More information on its effects, including possible danger to the liver and kidneys.

Red Yeast Rice Tablets on White Background

CL Answer

Can supplements, natural eye drops, or lifestyle modifications improve symptoms of dry eye?

Can supplements such as fish oil, flaxseed oil or curcumin (from turmeric) help treat dry eyes? Find out, including formulas and doses that have shown benefit. Also, learn if drinking more water or using eye drops containing castor oil, N-acetylcarnosine or aloe can help with dry eye.

Older man with dry eye rubbing his eyes while holding his glasses

CL Answer

Is topical menthol, such as Biofreeze, safe and effective for pain relief?

Menthol is commonly used in topical creams and gels for pain relief. Find out if it works and if it's safe.

Man applying menthol cream

CL Answer

Do hair loss supplements, such as Viviscal, Hair La Vie, and Nutrafol, or topical essential oils work?

Vitamins and supplements that may help with hair loss and thinning, including saw palmetto, beta-sitosterol, protein, iron, and vitamin D.

Supplements for Hair Loss -- woman looking at hairbrush

CL Answer

Is Bottled Water Better Than Tap Water?

Some people consider bottled water to be a favorable alternative to tap water, but is it really better? Find out how bottled water and tap water compare in terms of taste, mineral content, acidity, and contaminants such as microplastics and PFAS.

Woman holding glass of water next to bottle of water

CL Answer

What are the health benefits of palmitoylethanolamide (PEA), and is it safe?

Palmitoylethanolamide (PEA) is commonly promoted for its anti-inflammatory and pain-relieving effects. Find out if it works.

Woman holding her wrist due to joint pain

CL Answer

Dimethyl sulfoxide (DMSO): Health Effects & Safety Concerns

Dimethyl sulfoxide (DMSO) is a colorless liquid promoted for osteoarthritis, interstitial cystitis, tennis elbow, rotator cuff tendonitis, wound healing, and many other conditions. Find out if it works and if it's safe.

Man applying DMSO gel to knee

CL Answer

What is the best sunscreen based on safety and efficacy?

We’ve boiled down the latest research about mineral and chemical sunscreens, including product tests, to help you choose the best sunscreen (which will depend on whether you expect to be in or out of the water). We also list popular sunscreens that have, or have not, been found to contain cancer-causing compounds (benzene and benzophenone).

Carcinogens in Sunscreens - Bottle of sunscreen with a question mark

Product Review

Green Coffee Bean Extract Supplements Review (for Weight Loss)

Choose the Best Green Coffee Bean Extract. 50% of Green Coffee Bean Extract Supplements Don't Deliver Expected Ingredients.

Green Coffee Bean Extract Supplements Reviewed by ConsumerLab.com

CL Answer

Do any supplements or lifestyle changes reduce the symptoms of tinnitus? Is it true that some supplements can cause tinnitus?

Learn which supplements can ease tinnitus, including melatonin and pine bark extract. Understand which may actually cause tinnitus.

Word blocks spelling out “tinnitus”

CL Answer

Do any supplements help relieve stress?

Are there actually supplements for stress relief and panic attacks? Learn more about holy basil, fish oil, L-theanine, and ginseng.

CL Answer

5 Tips for Finding a Soap or Body Wash That Won't Irritate Skin

Get 5 tips for finding soap or body wash that won't cause skin irritation. See which soaps we rate best, ingredients to avoid, and phrases on labels that can mislead.

Different bars of soap on a marble countertop

CL Answer

Which is the best mask to prevent COVID-19 and how do cloth, disposable, N95, and KN95 masks compare? How can I stop glasses from fogging?

See our Top Picks for masks. Learn how to make COVID-19 masks from materials at home that can be almost as effective as surgical mask and N-95 masks.

Four masks shown for comparison

CL Answer

Do any supplements help prevent or treat a cold?

Are there supplements that can help prevent or treat cold symptoms? Learn more about zinc, probiotics, vitamin C and more.

Supplements for Colds: Zinc, Echinacea & More -- Couple with cold, sitting on couch blowing their noses

CL Answer

All About Thyroid Supplements & Desiccated Thyroid Extract (Armour Thyroid)

Learn about supplement ingredients such as iodine, selenium, zinc, acetyl-l-carnitine, ashwagandha and guggul used for thyroid conditions and find out if they are beneficial. Also learn why ingredients such as alpha-lipoic acid, soy, resveratrol, quercetin may impair thyroid function.

Woman holding various vitamins and supplements in one hand and glass of water in the other

Product Review

Breast Enhancement Supplements Review Article

Do Breast Enhancement Supplements Really Work? See the Evidence For and Against Breast Enhancement Supplements.

Do Breast Enhancement Supplements Work?

CL Answer

Should I take, or avoid, any supplements if I take omeprazole (Prilosec), esomeprazole (Nexium), or other proton pump inhibitors for heartburn?

Supplement interactions with proton pump inhibitor (PPI) drugs like omeprazole (Prilosec) and Nexium.

CL Answer

What are the health benefits of tart cherry juice?

See the evidence for tart cherry juice health benefits from clinical studies. Find out if tart cherry has anti-inflammatory effects, if it can improve sleep, lower high blood pressure, or help for muscle pain and osteoarthritis.

Tart Cherry Benefits -- glass of cherry juice and two tart cherries

CL Answer

Does Prelief Help with Heartburn or Bladder Pain Caused By Acidic Foods?

Learn about Prelief, a product promoted to reduce acidity from foods and drinks that may cause bladder pain, frequent urination, heartburn, or indigestion. Discover what Prelief claims to do, the clinical evidence supporting its use, and important safety considerations.

Bottle of Prelief Caplets and Container of Prelief Powder

CL Answer

What is TUDCA (tauroursodeoxycholic acid)? Does it have any proven health benefits, and is it safe?

TUDCA information, including its potential health benefits, safety, possible interactions, and cost.

What is Tudca - white capsules poured out of container

CL Answer

Here’s What You Should Look For In Toothpaste and Mouthwash, and Our Top Picks

Learn about ingredients you want in your toothpaste, mouthwash and other dental products and which ingredients you may want to avoid.

Toothpaste in the shape of question mark coming out from toothpaste tube

CL Answer

How to Reduce Lightheadedness and Dizziness When Standing Up (Orthostatic Hypotension)

Learn about movements that can reduce lightheadedness and dizziness that can occur from a drop in blood pressure upon standing (initial orthostatic hypotension). Plus find out if supplements such as vitamin D and CoQ10 may help.

Orthostatic Hypotension

CL Answer

Do any supplements, like Nervive, help with nerve pain, like sciatica, diabetic neuropathy or postherpetic neuralgia?

Find out which supplements for nerve pain, including fish oil and alpha-lipoic acid, are effective for sciatica, diabetic neuropathy, or postherpetic neuralgia.

CL Answer

Do any supplements or foods help prevent sunburn or skin damage from sun exposure? Can any increase your risk of sun-related skin damage?

Find out which supplements may help protect from sunburn and sun-related skin damage, including beta-carotene, vitamins A and C, and cocoa.

Dermatologist examining the skin on the back of an older woman for signs of sun damage or skin cancer

CL Answer

Which supplements can help to lower blood pressure?

Supplements to lower blood pressure, including CoQ10, vitamin C, fish oil, and olive oil, are all explored to find out what works.

Supplements that can lower, or raise blood pressure -- blood pressure cuff and bottle of pills

CL Answer

What are the health benefits of serrapeptase?

Serrapeptase is a proteolytic enzyme. Learn more about its health effects, including whether evidence supports its use for pain, inflammation, and heart health.

Serrapeptase for Inflammation and Pain

CL Answer

Is it true that low-carb or Mediterranean diets help for gastroesophageal reflux disease (GERD)?

Find out if a low-carb diet, such as the Mediterranean diet, or lifestyle changes help with gastroesophageal reflux disease (GERD).

Low-carb & Mediterranean Diets for GERD? -- Table with Mediterranean foods such as fish, olive oil, walnuts, vegetables

Product Review

Joint Health Supplements Review (Glucosamine, Chondroitin, MSM, Boswellia, Collagen and Turmeric)

18% of Joint Health Supplements Failed to Pass Our Tests. See Which Passed or Failed, and Our Top Picks.

Joint Health Supplements Review 2025

CL Answer

What is the difference between cysteine and cystine?

Find out the difference between cysteine and cystine amino acids, including where each is found and their functions.

Young Woman Taking Supplement

CL Answer

Do brain games and apps really work and improve memory?

Find out if brain training games & apps, like Lumosity & BrainHQ, really work to train the mind and improve memory. ConsumerLab.com's answer explains.

Do brain games really improve memory? -- hand holding smartpphone with game app

CL Answer

Which supplements and foods help with gout and which may worsen it?

Find out about the effects on uric acid levels and gout of fish and fish oil, coffee, beer, animal meat, milk proteins, vegetable proteins, fructose, lemon juice, tart cherry juice, vitamin A, vitamin C, and niacin

Woman with gout pain rubbing her foot near the big toe

CL Answer

Does Carditone work to lower blood pressure?

Carditone information, including safety and side effects, whether Carditone has been shown to work for blood pressure and angina, and more.

CL Answer

What is the benefit of magnesium orotate compared to other forms of magnesium?

Find out if magnesium orotate is the best form of magnesium for supplements, including safety concerns.

Magnesium

CL Answer

10 Supplements That May Boost Testosterone (And 13 That May Not)

Many supplements promise to increase testestorone, boost libido, and increase muscle size, but, as ConsumerLab explains, the actual effectiveness of supplements is limited, and some supplements may actually reduce testosterone levels.

Chalkboard sign that says low testosterone sitting on a table in front of a book and supplements

CL Answer

Does red and near infrared light therapy reduce pain, improve skin or cognition, or have other benefits? Is it safe?

Red light and near infrared light therapy devices are promoted for numerous conditions, including acne, fibromyalgia, pain, cognitive function and other uses. Find out if these devices work and if they are safe.

Woman using a red light device on her lower leg

Product Review

St. John's Wort Supplements Review

Find the Best St. John's Wort Supplement. Only 40% of St. John's Wort Supplements Pass Tests & Strength Varies Widely.

St John's Wort Supplements Reviewed By Consumerlab.com

Product Review

Lactose Intolerance Products Review (Lactase Enzyme Supplements and Lactose-Free Milks)

Choose the Best Lactase Enzyme Supplement and Lactose-Free Milk. Find a CL Approved Lactose Intolerance Product.

Lactase Supplements Reviewed by ConsumerLab.com

CL Answer

Do arnica pills, gels, creams, or sprays reduce bruising, pain, or swelling?

Find out if arnica pills, gels, creams, or sprays can reduce bruising, pain, or swelling, help with varicose veins, or muscle pain after exercise.

Arnica Gel and Cream for Bruises and Pain -- tube of arnica cream

CL Answer

I have IBS and don't want to take medication if I can help it. I've heard that peppermint works for IBS, but is there good research to support this?

Information about using peppermint oil for irritable bowel syndrome (IBS), including clinical evidence, dosage, safety and more.

Peppermint Oil for IBS? -- Bottle of peppermint oil and capsules and peppermint leaf

CL Answer

Does Gynostemma pentaphyllum really work as an AMPK activator and help for diabetes, high cholesterol, or weight loss?

Find out if Gynostemma pentaphyllum ( jiaogulan) works as an AMPK activator and helps to lower blood sugar and treat diabetes. ConsumerLab.com's answer explains.

Jiaogulan (Gynostemma pentaphyllum) -- Gynostemma herb and capsules

CL Answer

How do I choose the best magnesium supplement?

Choosing the best form of magnesium supplements can be tricky due to the many different types (magnesium aspartate, bicarbonate, carbonate, chloride, citrate and others).

Magnesium Review 2024

CL Answer

Could taking vitamin C (500 mg), CoQ10, grape seed extract, fish oil, vitamin D3/calcium/magnesium/zinc interfere with taking beta-sitosterol with dinner?

Learn about drug interactions & proper dosages for supplements such as CoQ10, vitamin D & C, fish oil, magnesium, zinc and grape seed extract.

Doctor Holding Handful of Fish Oil

CL Answer

Dihydromyricetin (DHM) – Does It Help and Is it Safe?

Dihydromyricetin (DHM) is promoted for liver health, diabetes, lowering cholesterol, and as a hangover remedy. Find out if it works and whether it is safe.

woman pouring white capsules from a pill bottle into her hand

Clinical Update

3/15/2017

Anti-Inflammatory Effect of Juice Plus+?

Chronic systemic inflammation is a risk factor for cardiovascular disease, diabetes, and cancer. A recent clinical trial assessed the product Juice Plus+ for its ability to reduce this inflammation in obese men and women. The abstract of the published study indicates that it works, but the results tell a different story. For details, see the "What It Does" section of the Greens and Whole Foods Powders, Pills, and Drinks Review (which includes our tests of products) >>

Clinical Update

7/19/2017

Fish Oil for Depression

A number of studies have reported on whether taking fish oil can help with depression. The most recent study found a benefit using an amount and type of fish oil generally in-line with what other studies suggest works best. See the details in the "What It Does" section of the Fish Oil Review. The Review includes our tests, comparisons, and Top Picks for products.

Clinical Update

3/13/2018

Apple Cider Vinegar for Decreasing Appetite & Weight

Apple cider vinegar is often promoted for decreasing appetite and weight, but there have been few studies to show whether it works. Find out what a new study found in the Apple Cider Vinegar Review >> (Also see our Top Picks among products).

Clinical Update

7/13/2018

Fish Oil for Depression?

Several studies have evaluated omega-3 fatty acids to decrease the severity of depression. Find out if it works in the Depression section of the Fish Oil and Omega-3 Fatty Acid Supplements Review. (Also see our Top Picks among fish oil supplements.)

Clinical Update

2/01/2020

Pomegranate for Memory?

Pomegranate juice and supplements have been promoted for improving cardiovascular health, controlling blood sugar, and inhibiting prostate cancer. Most recently pomegranate juice was tested in a year-long study for its effects on memory. Find out if it helped, and see if it works for other touted uses, in the What It Does section of the Pomegranate Juice and Supplements Review Article.

Clinical Update

8/23/2022

Oral Minoxidil for Hair?

Use of minoxidil as an oral treatment for hair growth is gaining in popularity - although it's not an FDA approved use of this drug. Learn if it works, dosage, and side effects in our CL Answer about supplements and topical treatments for hair.

Clinical Update

11/01/2022

zuPOO for a Cleaner, Healthier Gut?

A CL Member asked if zuPOO, a supplement marketed as a colon cleanser, really works. See our take on this product and the evidence and safety of its ingredients.

Clinical Update

2/15/2022

New COVID Treatment

An antibody treatment that works against Omicron infection was recently authorized for people at high risk of progression to severe disease, but it needs to be used early. Learn more about it and other treatments in our answer about COVID treatments.

Clinical Update

4/19/2022

Pickle Juice Works for Muscle Cramps

A recent study found that pickle juice reduced the severity of cramps (e.g., in the calves and feet). Get the details, including the dosage, timing, and type of pickle juice used in our article about Supplements for Muscle Cramps.

Also find out if a product called HOTSHOT might be beneficial for muscle cramps.

Clinical Update

11/20/2025

DMSO for Pain: Does it Work?

Dimethyl sulfoxide (DMSO), applied to the skin, is promoted for osteoarthritis, interstitial cystitis, tennis elbow, rotator cuff tendonitis, wound healing, and many other conditions. Find out if it works and if it's safe in our article about DMSO.

Clinical Update

2/17/2026

Leg Cramps: Magnesium vs Compression Stockings

Which works better? See what a recent study showed in our Magnesium Supplements Review, which includes our Top Picks for magnesium.

Clinical Update

10/16/2025

Constipation Solutions: What Works. What Doesn’t

Experts have weighed in on the best remedies for chronic constipation. Find out which foods and supplements made the cut:

Clinical Update

5/07/2026

Capsimax for Weight?

Capsimax is a cayenne pepper ingredient in supplements for weight control. Find out if it works and if it's safe.

CL Answer

What is Pycnogenol, does it work, and is it the same as other pine bark extracts?

Learn more about Pycnogenol, including evidence from clinical studies on blood clots, osteoarthritis, cognition, vision, tinnitus, and the skin and safety.

Pine bark extract

CL Answer

Which supplements help with arthritis?

Learn more about supplements for joint health, including products such as Wobenzym and Zyflamend and ingredients such as collagen, curcumin, devil's claw, glucosamine and chondroitin, hyaluronic acid, magnesium, omega-3 fatty acids, palmitoylethanolamide (PEA), SAMe, and others.

Supplements for Osteoarthritis and Rheumatoid Arthritis -- Women With Arthritic Hands

CL Answer

How do over-the-counter (OTC) hearing aids compare to prescription hearing aids?

Non-prescription hearing aid reviews, including MD Hearing Aid, Eargo Hearing Aid, Liberty Hearing Aid, etc. Compare quality & cost with prescription hearing aids.

OTC hearing aids

CL Answer

What are the best bug sprays to prevent tick and mosquito bites? Is the insecticide permethrin safe to use?

Find out how permethrin sprays differ and which can be used on sheets and sleeping bags versus clothing

Variety of insect repellents on store shelf

CL Answer

Is ingesting colloidal silver helpful for any condition and is it safe to use?

Find out if there is evidence showing colloidal silver can help to treat infections, boost the immune system, help with arthritis and more, plus find out if colloidal silver can cause blue skin or other side effects.

Benefits and Risks of Colloidal Silver? -- dropper bottle of colloidal silver

CL Answer

Does Prevagen really improve memory?

Learn more about Prevagen, including clinical studies on Prevagen's impact on memory & cognition, safety, pricing, and an FDA warning letter. ConsumerLab explores the efficacy of Prevagen.

Prevagen for Memory? -- bottle of Prevagen

Product Review

Whole, Ground, Milled, and Cracker Flaxseed Review

High Levels of Cadmium Found in Flaxseed Products — Testing Expanded

News Release

March 04, 2020

CBD Most Often Used for Pain, Then Sleep, According to CL Survey. Half of Users Think It Works.

White Plains, New York, March 4, 2020 — A recent survey of 9,782 people who use dietary supplements found that 14.5% of respondents purchased CBD (or hemp extract, which is a source of CBD) in 2019. The survey asked those people what they used CBD for and whether or not they thought it worked.

CL Answer

Which supplements help reduce the risk of colorectal cancer?

Find out which supplements may reduce the risk of colorectal cancer, including folate, fiber, selenium, and vitamin D.

Supplements and Colorectal Cancer Risk -- colon cancer diagnosis form and supplements

CL Answer

OmegaXL Review: Does It Really Work for Joint and Muscle Pain?

Read our in-depth review of OmegaXL to see if it really helps with joint and muscle pain.

Omega XL - Great Health Works

CL Answer

Do any supplements, foods or lifestyle modifications help with brain function, like memory and cognition?

Find out which supplements help improve memory, brain function and cognition, including fish oil, some B vitamins, cocoa, and curcumin. ConsumerLab's answer explains the evidence for supplements promoted to help with brain function and cognition.

Supplements for Memory -- doctor holding a model of a brain and fish oil capsule

CL Answer

What is UC-II and does it help joints?

What is UC-II (undenatured type 2 collagen - InterHealth Nutraceuticals) and do clinical studies show that it works for joint health?

UC-II Collagen for Joint Pain? -- man with knee pain

CL Answer

Do either phosphatidylserine or phosphatidylcholine help with memory and cognition? How are these supplements different?

Find out if phosphatidylserine or phosphatidylcholine supplements improve memory and cognition.

Brain Puzzle

Product Review

African Mango (Seed Extract) Supplements for Weight Loss Review Article

Do African Mango Supplements Really Work For Weight Loss? Learn More About Choosing the Best African Mango Supplement: Evidence, Safety, Side Effects & More.

African Mango Seed Extract

Product Review

Hoodia (Hoodia gordonii) Supplements Review Article

Hoodia Supplements for Weight Loss. Will Hoodia help you lose weight? Make sure you know the facts.

CL Answer

PFAS (Per- and Polyfluoroalkyl Substances): How can I avoid PFAS in dental floss, food, water, and other products?

Some brands of dental floss may contain potentially toxic chemicals known as PFAS (polyfluoroalkyl substances). Get the details and learn which floss and pick products are our Top Picks.

Toxic PFAS Chemicals in Dental Floss -- Woman Looking at Dental Floss

CL Answer

Can any vitamins or minerals help prevent or reduce canker sores or cold sores?

Find out which, if any, supplements, including iron, L-lysine, monolaurin, olive leaf extract, vitamin B-12, and zinc, may be beneficial for canker sores or cold sores.

Lip of woman with a cold sore

CL Answer

Does collagen taken as a supplement help with arthritis? I'm seeing it in products for joint health.

Learn more about collagen supplements, including evidence from clinical studies on arthritis and muscle strength and safety.

Collagen Supplements for Joint Pain

CL Answer

Can any supplements be used to reduce inflammation in people sensitive to NSAIDs such as ibuprofen, high-dose aspirin, or naproxen?

Find out if supplements such as turmeric, fish oil, MSM (methylsulfonylmethane), SAMe (S-adenosyl-methionine), boswellia, ginger, white willow bark or arnica may, or may not, be helpful to people sensitive to NSAIDs.

Woman with NSAID-hypersensitivity looking at two supplement containers and wondering if they are safe to take

CL Answer

Do any supplements or foods benefit people with Crohn's disease? Are there any supplements that should be avoided?

Find out the most common vitamin and mineral deficiencies in people with Crohn's disease, including iron, B6, B12, vitamin D, zinc and others, plus evidence for N-acetyl-glucosamine (NAG), fish oil, and curcumin.

Supplements for Crohn's Disease -- Crohn's Disease Written on Notepad, Pills

CL Answer

L-Serine & D-Serine: Health Benefits and Safety

Serine exists in two forms: L-serine and D-serine. Find out how these two forms differ and learn if either form has health benefits and if it is safe.

Two white pills in front of a brain

CL Answer

ConsumerLab’s Review of The 'Pause Nutrition Supplements by Dr. Mary Claire Haver – Are They Worth It?

Looking into The 'Pause Nutrition supplements by Dr. Mary Claire Haver? ConsumerLab examines the value of products like Omega-3 + Vitamin D3 & K2, Fiber GDX, Skin Boost Plus, and more. Find out if these supplements are worth the price and discover affordable alternatives.

The Pause

CL Answer

Do Any Supplements Improve Dry Mouth (Xerostomia) or Make It Worse?

Find out if any supplements, topical formulations (patches, rinses, lozenges, toothpastes, sprays, gels or gums), or lifestyle modifications reduce dry mouths symptoms.

Older man drinking water for dry mouth

CL Answer

Estrogen Creams for Wrinkles?

Find out if estrogen creams can help reduce wrinkles, whether they are safe, and how "prescription" estriol and estradiol creams and gels differ from those sold over-the-counter.

Older woman applying estriol cream for wrinkles

CL Answer

Which is the best pulse oximeter for home use?

Best pulse oximeter for home use (COVID-19, asthma and COPD). Differences between home use and FDA-approved medical pulse oximeters.

Best Pulse Oximeter for Home Use -- Pulse Oximeter

CL Answer

10 Supplements That May Help Reduce Nighttime Urination (And 5 That May Not)

Waking up more than once during the night to use the bathroom? Learn more about the 9 supplements that may help and 5 others that don't.

A toilet in an empty bathroom at night

CL Answer

What are the best supplements for depression and anxiety?

Best natural supplements for depression and anxiety, including the evidence for fish oil, vitamin D, probiotics, and herbal supplements for depression such as curcumin (from turmeric) and saffron.

Best Supplements for Depression and Anxiety -- sad young woman sitting on couch, looking toward the window

CL Answer

How does turmeric spice compare to curcumin (turmeric extract) in supplements? I sprinkle it on my foods and wonder if that's equivalent to taking a supplement.

What is the difference between turmeric spices used in the kitchen and turmeric supplements? Is sprinkling turmeric on my food equivalent to taking a turmeric supplement? ConsumerLab's answer explores this question.

Turmeric Spice vs. Turmeric Supplements

CL Answer

ConsumerLab’s Review of ION* Gut Support

ConsumerLab's Review of ION Gut Support (formerly Restore), the liquid humic extract supplement derived from soil. Learn about the evidence for ION Gut Support for on digestion and gut health, reducing inflammation, and other uses, dosage, cost, and safety.

ION Gut Support 3

News Release

March 27, 2018

You Can't Always Rely on Bone Broth Labels -- ConsumerLab Tests Reveal How Much Protein, Collagen and Sodium Is Really In Bone Broths

White Plains, New York, March 27, 2018 — Bone broth is promoted as a natural source of collagen, an immune-booster, and a remedy for everything from joint pain to wrinkles.

CL Answer

Which supplements and foods can help lower or control blood sugar?

Find out which supplements can help lower or control blood sugar. Supplements including turmeric/curcumin, fiber, cinnamon, and ginseng are believed to help lower blood sugar.

Blood Sugar Control -- blood test and blood sugar chart

CL Answer

Is it true that NAC can help clear nasal passages?

Find out if N-Acetyl Cysteine (NAC) can help with post nasal drip & general sinus congestion and about supplements that may reduce cold symptoms.

Ill Woman in Bed Blowing Nose

CL Answer

Which supplements and foods reduce or increase the risk of kidney stones?

Find out which supplements, foods and beverages may increase or decrease the risk of kidney stones, including information about potassium, calcium, choline, turmeric and curcumin, vitamin C, as well as foods and beverages such as green tea, lemon juice, orange juice, cranberry juice, chocolate and almonds.

Supplements for Kidney Stones

CL Answer

Is hyaluronic acid helpful for osteoarthritis?

Hyaluronic acid supplement information including joint pain, osteoarthritis, clinical evidence, dosage and more.

Man Holding Knee from Knee Pain

CL Answer

Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?

Information about heart health supplements & vitamins that help with cholesterol, including sterol esters, CoQ10, and vitamin D, and which may be bad for the heart, like calcium.

CL Answer

After taking a curcumin supplement, I started getting chronic diarrhea which went away when I stopped taking it. Can curcumin supplements cause diarrhea?

Learn more about the side effects of curcumin supplements, including diarrhea and other gastrointestinal discomfort.

Turmeric and Diarrhea

CL Answer

Where to Safely Buy Real Vitamins and Supplements Online, Not Fakes or Counterfeits

ConsumerLab explains how to avoid counterfeit vitamins and supplements when shopping online on Amazon, Walmart.com, and other sites. Learn to identify authorized sites and sellers and avoid fake supplements. Use the brand-by-brand guide to protect yourself from risk.

Woman in Orange Sweater

CL Answer

Does Arthrozene help with joint pain, and is it safe?

Arthrozene by Fisico is promoted for joint stiffness, soreness and discomfort. Find out if it is likely to help and if it is worth the cost.

Container of Arthrozene supplements

CL Answer

Do essential amino acid (EAA) supplements help build muscle better than dietary protein or protein supplements?

Comparison of essential amino acids vs dietary protein and protein supplements for building muscle.

Hands holding essential amino acid capsules and protein powder

CL Answer

Powders vs. Pills: Which Type of Supplement Is Better Absorbed?

Learn more about taking supplements & multivitamins in powder or tablet form, including tips on how to get the most from your supplement.

Orange Powder Dissolving in Glass of Water

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What is Protandim and does it really work?

What is Protandim and does it really work? Can Protandim reduce oxidative stress? ConsumerLab's answers discusses Protandim's effectiveness, reviews and studies.

Does Protandim Work? -- Bottle of Protandim

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What is EpiCor? Does it really "boost" the immune system and prevent colds?

EpiCor supplement info, including evidence from clinical studies on immune function and cold/flu prevention, safety, and price.

Woman with Cold Holding Pill Bottle

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Do any supplements reduce wrinkles, increase skin elasticity, or tighten the skin?

Learn about collagen, biotin, CoQ10, cocoa, soy isoflavones, phytoceramides, and other supplements for reducing wrinkles and improving aging skin.

Elderly Woman Smiling Looking in Mirror

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Do any supplements help with COVID-19? Do supplements like vitamin D, zinc, vitamin C, or herbals work?

Find out if natural remedies & supplements for coronavirus such as zinc, vitamin C, garlic, or elderberry help to prevent or treat COVID-19.

Supplements for Coronavirus (COVID-19)? -- mask and pills

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L-Tyrosine: Health Effects and Safety

Tyrosine has been evaluated for conditions including physical and mental stress, phenylketonuria (PKU), depression, and attention deficit-hyperactivity disorder (ADHD). Find out if it works and if it's safe.

White tyrosine capsules on blue table

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Capsimax for Weight Control: Does It Work & Is It Safe?

Capsimax, a cayenne pepper extract, is included in a number of supplements for weight loss. Find out if it works and if it's safe.

Chili peppers with capsimax

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Supplements for Attention-Deficit/Hyperactivity Disorder (ADHD): Are Any Helpful?

Dietary supplements are often explored as alternative options or add-on interventions for people with ADHD. Learn which, if any, have shown possible benefit and which don’t seem to help or may interfere with ADHD medication.

Dice spelling adhd

Recalls & Warnings

July 26, 2023

FDA Warns Wise Women’s Choice for Promoting Plant-Based Product for Contraception

On July 20, 2023, the FDA issued a warning letter to Wise Women’s Choice following a review of the company’s website and social media, which found statements about the company’s Wise Women’s Choice products to be drug claims because products were intended to affect ...

Recalls & Warnings

June 26, 2015

Seller of CoQ10, Anxiety Supplements and More Warned for Manufacturing Violations, Drug Claims

On June 6, 2015, the FDA issued a warning letter to Country Doctor Herbals, following a facility inspection which found the company's products, including  Herbal Flu Be-Gone, Herbal Multi-Bac, Herbal Nervine, Herbal Pain-A-Way, Herbal Pancreas, Herbal Parasite Cleanse, Herbal Perfect ...

News Release

August 08, 2016

ConsumerLab Finds Lead, Cadmium and Arsenic Contamination in Greens and Whole Foods Supplements

White Plains, New York, August 9, 2016 — Powders, pills and drinks made from ingredients like wheat grass, alfalfa, kelp, spirulina, chlorella, leafy vegetables and fruits are a popular choice for people looking to increase their intake of vitamins, minerals and other plant-based nutrients.

News Release

June 03, 2016

What Works for Joint Health? ConsumerLab.com Reviews Glucosamine, Chondroitin, MSM and Boswellia Supplements for People and Pets

White Plains, New York, June 3, 2016 — Do popular joint health supplements with ingredients such as glucosamine, chondroitin, Boswellia, and MSM really work to relieve pain or slow the progression of osteoarthritis? And, with so many to choose from, which supplements are best? To find out, ...

News Release

October 04, 2012

Five Years After ConsumerLab.com Reported a Problem, FDA Agrees Generic Version of Wellbutrin XL Is Not Equivalent and Is Pulled Off Market — Important Lessons about Generics

White Plains, New York — October 4, 2012 [Updated 10/11/12]— Are all generic drugs therapeutically equivalent to their brand name counterparts? Until yesterday, the FDA, and many others, adamantly said they were.

Recalls & Warnings

September 21, 2023

Moor Herbs, Inc Warned for Manufacturing Violations, Drug Claims

On August 1, 2023, the FDA issued a Warning Letter to Moor Herbs, Inc.

Recalls & Warnings

June 05, 2020

LifeHealth Science Warned for Manufacturing Violations

On May 15, 2020, the FDA issued a warning letter to LifeHealth Science, which found the company's ORËÁ product to be adulterated because it was prepared, packed, or held under conditions that violate Current Good Manufacturing Practices for dietary supplements.

News Release

April 28, 2009

40% of Green Tea and Selenium Products Fail ConsumerLab.com Review of Cancer-Prevention Supplements; Lycopene Supplements Pass

WHITE PLAINS, NEW YORK — APRIL 28, 2009 — ConsumerLab.com announced results today of its Product Review of Supplements for Cancer Prevention.  Among the products that ConsumerLab.com selected for testing, quality problems were found with two out of five green tea supplements.

Recalls & Warnings

April 25, 2022

Some OTC Skin Lighteners Contain Potentially Harmful Ingredient, Warns FDA

On April 19th, 2022, the FDA issued warnings to 12 companies for selling over-the-counter (OTC) skin-lightening products containing hydroquinone.

Recalls & Warnings

March 11, 2003

Rexall Agrees to Pay up to $12 million to Users of Misleading Cellulite Supplement

On March 11, 2003, the Federal Trade Commission (FTC) reported that Rexall Sundown, Inc. (Rexall) will pay up to $12 million to resolve FTC charges regarding its marketing of the dietary supplement, "Cellasene," a purported cellulite treatment product.

Recalls & Warnings

March 05, 2021

Seller of Earth Tea Warned for COVID-19 Claims

On February 18, 2021, the FDA issued a warning letter to B4B Corp. following a review of the company's website by the FDA and Federal Trade Commission (FTC) which found the company promoted Earth Tea Extra Strength with unsupported claims that it can treat coronavirus (COVID-19).

Recalls & Warnings

June 23, 2020

North Isle Wellness Center Warned for Coronavirus Claims

On June 19, 2020, the FDA issued a warning letter to North Isle Wellness Center for selling products with unsupported claims that they can treat coronavirus (COVID-19).

Recalls & Warnings

May 18, 2023

EarthLab, Inc. Warned for Promoting Green Tea, Curcumin, Elderberry & More to Treat Stroke, Cancer & Flu

On April 27, 2023, the FDA issued a warning letter to EarthLab, Inc., dba Wise Woman Herbals, following inspection of the company’s website which found statements about the company’s Green Tea Solid Extract, Curcuma Spp.

Recalls & Warnings

April 20, 2021

Chiropractor Who Claimed Vitamin D and Zinc Work Better Than COVID Vaccines Charged by FTC

On April 15, 2021, the FTC charged St.

Recalls & Warnings

April 28, 2020

Ten Multi-Level Marketing Companies Warned for Coronavirus and Deceptive Earnings Claims

On April 24, 2020, the FTC announced that it sent warning letters to ten multi-level marketing companies for selling products such as essential oils and immune system boosters with unsupported claims that they can treat coronavirus (COVID-19) and/or for misrespresenting potential earnings people ...

Recalls & Warnings

December 10, 2019

Poisoning from Essential Oils Increasing

Poisonings from essential oil ingestion increased by 16.3% in Australia over a 4-year period, according to a study recently published in the Medical Journal of Australia. The researchers also noted reports of increased frequency and/or severity of essential oil poisonings in the U.S.

Recalls & Warnings

October 08, 2019

Seller of Tea, Colloidal Silver, Homeopathic Products Warned for Manufacturing Violations

On September 12, 2019, the FDA issued a warning letter to Herbal Healer Academy, Inc.

Recalls & Warnings

April 28, 2020

Natures CBD Oil Distribution Warned for Joint Pain Claims

On April 20, 2020, the FDA issued a warning letter to Homero Corp DBA Natures CBD Oil Distribution, following an inspection of the company's website which found the company's products, including Natures Pure CBD Oil, CBD Froggies 25mg, CBD Froggies 50mg, CBD Edibles 200mg Frogs, CBD ...

Recalls & Warnings

May 09, 2020

FTC Warns 45 More Companies for Coronavirus Claims

On May 7, 2020, the FTC announced that it sent warning letters to 45 companies for selling products such as herbal products, immune system boosters, and vitamin C with unsupported claims that they can treat coronavirus (COVID-19).

Recalls & Warnings

January 21, 2017

Seller of "Cancer Kits," Alpha Lipoic Acid Supplements and More Warned for Drug Claims

On December 22, 2016, the FDA issued a warning letter to Northern Health Products, Inc. following a review of the company's websites, www.northernhealthproducts.com and www.petdca.

Recalls & Warnings

May 30, 2015

Seller of Supplements for Herpes, Prostate Cancer & More Warned for Drug Claims

On May 7, 2015, the FDA issued a warning letter to Strictly Health Corporation, following a review of the company's websites which found statements made about FENVIR, Prosta Pep and Tonalin brand CLA to be drug claims.

Recalls & Warnings

September 26, 2014

FDA Warns Seller of Supplements and Chocolate Promoted to Treat Ebola

On September 23, 2014, the FDA issued a warning letter to Natural Solutions Foundation, following a review of the company's websites which found statements made about Silver Sol Nano Silver (also called The Silver Solution) and CBD Organic Dark Chocolate Bars (also called High Potency CBD Hemp Oil) ...

Recalls & Warnings

November 15, 2016

FTC Announces New Enforcement Policy on Homeopathic Drug Claims

On November 15, 2016, the Federal Trade Commission (FTC) announced its new enforcement policy on marketing claims for over-the-counter (OTC) homeopathic drugs. The policy will hold homeopathic drug claims to the same standard as other products making similar claims.

Recalls & Warnings

September 16, 2016

Memory Enhancement Ingredient Vinpocetine Should Not Be Sold In Supplements, Says FDA

On September 7, 2016, the FDA announced its tentative conclusion that the synthetic compound vinpocetine, currently sold in some dietary supplements, should not be classified as a dietary supplement ingredient.

Recalls & Warnings

August 02, 2016

Seller of Whey Protein Warned for Manufacturing Violations, Drug Claims

On July 22, 2016, the FDA issued a warning letter to New Horizon Nutraceuticals, LLC, following a facility inspection which found the company's product, One World Whey Protein Power Food to be adulterated because it was prepared, packed, or held under conditions that violate Current ...

Recalls & Warnings

February 03, 2016

Seller of Weight and Enhancement Supplements Warned For Drug Claims

On December 11, 2015, the FDA issued a warning letter to The One Minute Miracle, Inc., following a review of the company's website which found statements made about   Miracle Diet 30 and Miracle Rock 48 to be drug claims.

Recalls & Warnings

May 24, 2013

Seller of Liquid Minerals, Joint Care and Herbal Supplements Warned For Manufacturing Violations, Drug Claims

On April 8, 2013, the FDA issued a warning letter to Body Systems, Inc.

Recalls & Warnings

May 10, 2013

Maker of Concentration, Pain, Immune, Cholesterol Supplements Warned For Drug Claims

On April 24, 2013, the FDA issued a warning letter to EuroPharma Co., Inc., following a review of the company's website which found statements made about Calm Kids, CholestCaps, CuraMed 375 mg, CuraMed 750 mg, Curamin, Mental Advantage, Tri-Iodine, and Viragen to be drug claims.

Recalls & Warnings

July 29, 2008

Recall of Sexual Enhancement Supplements Containing Drug

On July 28, 2008 the U.S. FDA announced that Jack Distribution, LLC and G & N works, Inc. are conducting a voluntary nationwide recall of all lot numbers of the company's supplement products sold under the brand names Rize 2 The Occasion and Rose 4 Her.

Recalls & Warnings

December 06, 2013

Weight Loss Supplement Claims Challenged

On November 27, 2013, the National Advertising Division (NAD) recommended HealthyLife Sciences, LLC, modify or discontinue the use of certain claims made about the company's weight loss supplement Healthe Trim.

Recalls & Warnings

January 10, 2017

FTC Charges Marketers of Prevagen With Making False Claims

On January 9, 2017, the FTC charged the marketers of Prevagen with making false and unsubstantiated claims that the supplement improves memory, provides cognitive benefits, and is "clinically shown" to work. 

Recalls & Warnings

November 07, 2005

FTC Stops Bogus Ads for "Bio Trim" and Other Weight-loss Products

On November 7, 2005, the Federal Trade Commission (FTC) announced that under the terms of a consent agreement that it has approved, Tustin, California based Natural Products, LLC, All Natural 4 U, LLC and their owner, Ana M.

Recalls & Warnings

September 15, 2005

Weight Loss Pill Marketer in Settlement with New Jersey Attorney General

On August 16, 2005, New Jersey Attorney General Peter C. Harvey and Consumer Affairs Director, Kimberly Ricketts, announced that Goen Technologies Corp.