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CL Answer
Which ingredients should toothpaste contain, and which should be avoided?
Learn about ingredients you want in your toothpaste and which ingredients you may want to avoid.
CL Answer
Do any supplements help with gum disease or periodontitis?
Supplements for healthy gums may help with gum disease or periodontitis. Learn more about omega fatty acids, lycopene, and probiotics.
Clinical Update
3/25/2022
Probiotic for Oral Health?
Can a probiotic lozenge decrease cavity risk, tooth plaque, and/or staining? See what the latest research shows in the What It Does section of our Probiotic Supplements Review.
Clinical Update
11/17/2013
Probiotics for Oral Health?
For people with periodontitis (inflammation around the teeth), a new study showed a probiotic lozenge resulted in additional improvement over standard dental scaling and chlorhexidine rinse. Get the details, as well as our tests of probiotics, in the updated Probiotic Supplements Review>>
Clinical Update
5/29/2014
Probiotic Gum for Throat Infections
A gum containing a probiotic has been found to significantly reduce the incidence of throat infections in children and has been approved to promote oral health and reduce bad breath. For more details, as well as our tests of probiotic supplements, see the update in the Probiotic Supplements Review >>
Product Review
Probiotic Supplements Review (Including Pet Probiotics)
Find the Best Probiotic Supplement. CL Tests Reveal the Best Probiotic Supplements for You (and your pet)!
Product Review
Zinc Supplements and Lozenges Review
Find the Best Zinc Supplements and Lozenges. Have a Cold? See CL's Top Picks Among Zinc Supplements and Lozenges.
CL Answer
Are vitamin D oral sprays more effective than vitamin D pills or drops?
Learn more about vitamin D oral sprays, pills, and drops, including a price comparison.
CL Answer
Do vitamin patches, such as for B12 or multivitamins, really work? How about those from PatchMD?
Do vitamin B12 Patches like PatchMD really work? Can you absorb vitamin B12 through patches?
CL Answer
What are the health benefits of zinc carnosine, also called polaprezinc, and is it safe?
Find out if zinc carnosine is beneficial for any GI conditions, including stomach ulcers, Helicobacter pylori infection, taste disturbances, aspirin-induced small-bowel injury and oral mucositis, and learn if it is safe.
CL Answer
Is it true that drinking a small amount of hydrogen peroxide (H2O2) with water can kill bacteria in the urinary tract or help in other ways? Is this safe -- or is it dangerous?
Drinking or eating hydrogen peroxide (H2O2) can be dangerous and is not advised. Learn more treatments for urinary tract infections.
CL Answer
Does silica have health benefits? What is BioSil, and can it really increase collagen production and strengthen hair, skin, nails and bones?
Information about the health effects of silica (silicon dioxide) and orthosilicic acid (an ingredient in BioSil), including whether these forms of silicon can really increase collagen production, thicken hair, strengthen nails & bones.
CL Answer
Can curcumin help prevent or improve symptoms of Alzheimer's disease?
Information on studies of the evidence around the effects of turmeric/curcumin and Alzheimer's.
CL Answer
Are there supplements that interact with estrogen-replacement therapies like Premarin and Estrace?
Estrogen hormone replacement therapy pills, creams, and tablets, such as Premarin, Estrace, Imvexxy, Ogen, and Vagifem can interact with certain supplements and foods, including St. John's wort and grapefruit juice. Learn more.
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.
CL Answer
Is it true that calcium citrate increases the absorption of aluminum?
Find out how calcium citrate can impact the absorption of aluminum in your body and if this is a problem for your health.
Clinical Update
8/28/2018
Probiotics for Gum Disease
Can probiotic lozenges improve gum health when used in conjunction with oral cleanings? Find out what studies are showing in the Periodontitis section of the Probiotics Supplements Review. (Also see our Top Picks among probiotic supplements for other uses.)
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, including Oral-B Glide, may contain potentially toxic chemicals known as PFAS (polyfluoroalkyl substances), according to one study. Get the details in ConsumerLab's answer.
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.
CL Answer
Do face creams, anti-aging serums, and acne gel treatments containing vitamin A or retinol reduce bone density or increase the risk of fractures?
Find out if using face creams, anti-aging serums, or acne gel treatments containing vitamin A or retinol can reduce bone mineral density or increase the risk of fractures,
CL Answer
Is aloe an effective remedy for dry eye?
Find out if aloe can be used as an eye drop to help for dry eye, plus information about other supplements that may help for dry eye.
CL Answer
Are there drug interactions with magnesium supplements?
Find out about interactions between magnesium supplements and over-the-counter antacids and laxatives such as Maalox, antibiotics, and statins and diabetes medications. ConsumerLab’s answer explains.
Clinical Update
9/24/2019
Vitamin D Sprays
Are oral vitamin D sprays better than vitamin D capsules? Find out what studies are showing in the Oral Sprays section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Clinical Update
12/24/2021
Oral Symptoms of B-12 Deficiency
Vitamin B-12 deficiency can cause a range of symptoms in the mouth, as described in a recent report. Learn about oral and other symptoms of B-12 deficiency in the B-12 section of our B Vitamin Supplements Review. Also, see our Top Picks for B-12 and other B vitamins.
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
9/16/2022
A Caution with Low-dose Minoxidil
Although rare, be aware that serious side effects due to pharmacy errors have been reported with low-dose oral minoxidil preparations. Get the details in the How to get low-dose oral minoxidil section of our CL Answer about supplements for hair.
Clinical Update
9/20/2022
Dry Mouth Spray
A CL member asked us to review the oral moisturizer Allday Dry Mouth Spray. Find out how it compares to other products, and see our Top Pick among them, in the Oral Moisturizers section of our article about the best toothpastes and other dental products.
Clinical Update
8/05/2022
Help for Dry Mouth
Find out which toothpastes, oral rinses and lifestyle modifications may help reduce symptoms of dry mouth.
CL Answer
I take melatonin to help me fall asleep. Are there any drugs that interact with melatonin that I should be aware of ?
Melatonin interactions with drugs, including blood pressure medications, Xanax, Ambien, antidepressants, caffeine and more.
CL Answer
When is the best time to take probiotics to prevent diarrhea from antibiotics - before, during, or after the course of antibiotic treatment?
When is the best time to take probiotics to reduce the risk of diarrhea from antibiotics?
Product Review
Potassium Iodide (KI) and Iodate (KIO3) Radioprotective Pills Review
Learn How to Choose the Best Radioprotective Iodine Pill and Use It Properly
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.
Clinical Update
10/31/2016
Vitamin D Spray
A study found that vitamin D oral spray was no better than capsules in raising vitamin D levels in healthy men and women. However, a similar study in people with intestinal conditions that can affect absorption suggests a spray may be better. For details (as well as our ratings of products), see the ConsumerTips section of the Vitamin D Supplements Review >>
Clinical Update
8/12/2022
XyliMelts for Dry Mouth?
A CL member wrote to us about XyliMelts to treat symptoms of dry mouth. We've added clinical information about it to the Strategies to Reduce Dry Mouth section of our article about oral care products.
Product Review
Lysine Supplements Review
Choose the Best Lysine Supplement. CL Tests Reveal Which Lysine Supplements Provide the Best Quality and Value.
CL Answer
Do supplements help treat peptic ulcer disease? Should any be avoided?
Vitamins and supplements that may help with peptic ulcer disease, including probiotics, cranberry, melatonin, lactoferrin, berberine, and licorice.
CL Answer
What is vitamin B12 and how much do I need?
Vitamin B12 dosage varies depending on your age, gender, and various other factors. Our CL Answer explains why B12 is important, the recommended dosages, deficiency, health benefits, and the best form.
CL Answer
Is there a difference between taking vitamin D in the dry form versus the oil capsules? Is one better than the other?
Learn more about how to take vitamin D, the best form to take and the best time of time day to take vitamin D.
CL Answer
What is shilajit? Does it have any proven health benefits, and is heavy metal contamination a concern?
Shilajit information, including its potential health benefits, safety, proper doses and impact on male health.
CL Answer
Which supplements can help treat anemia? Do any supplements cause a low red blood cell count?
Find out which vitamin and nutrient supplements can help prevent and treat anemia in people who are nutrient deficient and learn which supplements may cause low bleed cell counts, especially when used in excess.
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.
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.
CL Answer
Can lysine, vitamin B-12, or other vitamins or minerals help prevent or reduce canker sores?
Lysine, B12, zinc and other vitamins and minerals for canker sores. Find out what supplements can help prevent or reduce canker sores.
CL Answer
Do any supplements reduce side of effects of chemotherapy?
Find out if there are any supplements that can help with the side effects of chemotherapy, such as nausea, vomiting, diarrhea, nerve damage and others. ConsumerLab.com's answer explains.
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.
News Release
2/15/2018
Tests Reveal How Much CBD is Really in CBD and Hemp Oils -- Some Don't Provide Amounts of CBD Listed on Labels
White Plains, New York, February 15, 2018 (UPDATED 2/11/19) — CBD (cannabidiol) has become popular for treating pain, helping with anxiety and insomnia, and a variety of other conditions, despite the fact that the FDA has stated it cannot legally be sold as ...
Recalls & Warnings
7/18/2022
CVS, Target, Walgreens, and Other Oral Magnesium Citrate Laxatives Recalled Due to Bacterial Contamination
On July 14, 2022, Magnesium Citrate Laxative Oral Solution Lemon Flavor products manufactured by Vi-Jon, LLC and sold under various store brand names were recalled after testing identified the presence of the bacteria Gluconacetobacter liquefaciens.
Recalls & Warnings
8/08/2022
Recall of Oral Magnesium Laxatives Expanded
On August 3, 2022, Plastikon Healthcare, LLC issued a recall of multiple oral suspension products due to microbial contamination.
Recalls & Warnings
6/07/2017
FDA Warns Seller of Probiotic and Omega-3 Supplements for Manufacturing Violations
On May 22, 2017, the FDA issued a warning letter to BioTE Medical, LLC following a facility inspection which found its products, including BioTE DIM, BiotTE Probiotic, BioTE Iodine Plus, and BioTE Omega 3 to be adulterated because they were prepared, packed, or held under ...
Recalls & Warnings
6/20/2020
FTC Warns 30 More Companies for Coronavirus Claims
On June 18, 2020, the FTC announced that it sent warning letters to 30 companies for selling products such as immune system boosters, colloidal silver, vitamin C, and CBD with unsupported claims that they can treat coronavirus (COVID-19).
Recalls & Warnings
4/11/2020
FDA Warns Seller of Products Promoted to Treat Coronavirus in Pets and Humans
On April 7, 2020, the FDA issued a warning letter to Savvy Holistic Health dba Holistic Healthy Pet for selling products intended for pets and humans with unsupported claims that they can treat coronavirus (COVID-19).
News Release
11/06/2015
Some Surprising Results from Tests of 43 Probiotic Supplements and Kefir Drinks
White Plains, New York, November 6, 2015 — How many beneficial organisms are in probiotic supplements and kefir drinks? Are any contaminated with pathogens, such as E. coli, and do those labeled as "gluten free" or "99% lactose-free" live up to their claims? To find out, ConsumerLab.
Recalls & Warnings
1/20/2021
Seller of Omega-3 Warned for Making Claims to Treat Focus, Mood
On December 9, 2020, the FDA issued a warning letter to Bodyhealth.com, LLC following a review of the company's website, which found statements made about the company's products Healthy-Thin Energize, Body Detox (Oral Spray), and Omega 3 Health to be drug claims.
Recalls & Warnings
3/20/2020
Seller of Rejuvenation Pills Settles Charges of Making False Claims
Health Center, Inc. has agreed to halt their allegedly deceptive advertising claims about three "cure-all" health and wellness products that targeted older consumers nationwide after the Federal Trade Commission (FTC) filed a complaint.
Recalls & Warnings
9/08/2018
Homeopathic Oral Sprays Recalled Due to Possible Bacterial Contamination
On September 5, 2018, Beaumont Bio Med, Inc., issued a recall of all of its water and alcohol-based homeopathic products because they have the potential to contain microbial contaminants.
Recalls & Warnings
6/16/2019
"Immune Support" Throat Sprays Recalled
On June 13 2019, APS BioGroup, Inc. issued a recall of four "immune support" throat sprays because they have the potential to be contaminated with Stenotrophomonas maltophilia, a bacteria that can cause respiratory infection, particularly in individuals with weakened immune systems.
News Release
2/19/2015
Only 50% of Aloe Products Pass ConsumerLab.com Tests
White Plains, New York, February 19, 2015 — "Choose aloe products carefully," cautions ConsumerLab.com president Tod Cooperman, M.D. after recent tests found only five of 10 aloe pills, gels and drinks selected for review to contain what the company expected based on labels.
Recalls & Warnings
3/19/2019
FDA Calls Promotion of Nyloxin Homeopathic Products for Pain a "Health Fraud Scam"
On March 11, 2019, the FDA issued a warning letter to Nutra Pharma Corp. following a review of the company's website (www.Nyloxin.com) and social media sites found that the company was making drug claims about its homeopathic products promoted for arthritis and cancer pain.
Recalls & Warnings
7/28/2020
Iron Supplements Recalled Due to Undeclared Allergen
Between July 23 and 24, 2020, two companies issued recalls of iron supplements because they may contain undeclared milk.
Recalls & Warnings
5/09/2020
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
3/26/2021
Nine Banned Stimulants Found in Workout, Weight Loss Supplements
Recent analysis of 17 brands of sports/energy and weight loss supplements sold in the U.S. found nine prohibited stimulants formulated into eight different combinations, and none of these combinations have been studied in people.
News Release
8/25/2004
ConsumerLab.com finds not all vitamin E products meet claims — Results for 33 vitamin E supplements and skin products released today
WHITE PLAINS, NY — Wednesday, August 25, 2004 (Updated 10/24/04) — ConsumerLab.com announced today that five vitamin E products failed to pass recent testing for having either too little vitamin E and/or for containing synthetic vitamin E when claiming to be natural.
Recalls & Warnings
5/11/2022
FDA Warns 10 Companies for Selling Workout Supplements With Dangerous Ingredients
On May 4, 2022, the FDA issued warning letters to 10 companies for selling products promoted for muscle building, fat burning and other uses that contain potentially dangerous ingredients not permitted in dietary supplements, including hordenine, higenamine, 5-alpha-hydroxy-laxogenin, and CBD.
Recalls & Warnings
4/14/2020
Herbs of Kedem Warned for Making Coronavirus Claims
On April 10, 2020, the FDA issued a warning letter to Herbs of Kedem for selling products with unsupported claims that they can treat coronavirus (COVID-19).
Recalls & Warnings
11/26/2019
FDA Warns Companies Selling CBD Products as Dietary Supplements
On November 25, 2019, the FDA issued warning letters to 15 companies for selling products containing CBD (cannabidiol) labeled and marketed as dietary supplements, and/or for making drug claims about these products.
Recalls & Warnings
9/09/2018
Higenamine -- A Potentially Dangerous Stimulant -- Found in Some Supplements
A recent study found concerningly high doses of the stimulant higenamine in some weight loss, energy and sports supplements sold in the U.S. Higenamine is a naturally-occurring stimulant which is permitted to be sold as a dietary supplement ingredient in the U.S.
Recalls & Warnings
5/19/2018
Homeopathic Teething Drops, Nausea Drops, Silver-Zinc Throat Spray & More Recalled
On May 18, 2018, MBI Distributing, Inc.
Recalls & Warnings
2/19/2019
DG Baby Gripe Water Herbal Supplement Recalled
On February 15, 2019, Kingston Pharma, LLC issued a recall of all lots of DG Baby Gripe Water herbal supplement with organic ginger and fennel extracts due to the presence of an undissolved ingredient, citrus flavonoid.
Recalls & Warnings
12/22/2005
Health Canada Warns Consumers Not to Take Chaparral
On December 21, 2005, Health Canada (Canada's health ministry) warned consumers not to ingest the herb chaparral in the form of loose leaves, teas, capsules or bulk herbal products because of the risk of liver and kidney problems.
Recalls & Warnings
3/10/2015
Seller of Vision Supplements Warned for Manufacturing Violations, Drug Claims
On February 26, 2015, the FDA issued a warning letter to Biosyntrx, following a facility inspection which found the company's products, including BioTears Oral Gel Caps, ZoOmega-3 Concentrated Pharmaceutical-Grade Fish Oil, EpiCor A Nutrient-dense High Metabolite Immunogen, Sight C+ Mineral ...
Recalls & Warnings
5/22/2018
FDA Warns Companies Selling "Sun Protection" Supplements
On May 18, 2018, the FDA issued warning letters to four companies selling supplements for sun protection because statements made on product labels, websites and in marketing materials were found to be drug claims, which are not permitted for dietary supplements.
Recalls & Warnings
6/17/2015
Maker of Joint Supplement Warned for Manufacturing Violations
On May 29, 2015, the FDA issued a warning letter to Total Health Advanced Nutrition, Inc.
Recalls & Warnings
8/09/2010
FDA Warns Against "Miracle" Mineral Supplement
On July 30, 2010, The U.S. FDA warned consumers not to consume or use Miracle Mineral Solution, an oral liquid solution also known as "Miracle Mineral Supplement" or "MMS." The product, when used as directed, produces an industrial bleach that can cause serious harm to health.
Recalls & Warnings
10/17/2015
"Herbal Viagra" Taken by Lamar Odom Was a Known Problem
It was reported this week that former NBA star, Lamar Odom, entered a coma after taking as many as 10 pills of the "herbal Viagra" formula Reload, along with cocaine.
Recalls & Warnings
4/08/2017
Woman Dies After Receiving Turmeric Infusion
On March 16, 2017, a San Diego, California woman died days after receiving an IV infusion of turmeric. Jade Erick, age 30, suffered a brain injury and cardiac arrest after receiving the first 5 mL of a 250 mL infusion of turmeric in the office of a naturopathic doctor.
Recalls & Warnings
11/29/2016
Bentonite Clay Promoted for "Detoxification" Contaminated With Lead
On June 17, 2016, the FDA issued a warning letter to Best Bentonite, following a facility inspection and laboratory analysis of product sample which found the company's Best Bentonite to be contaminated with lead.
Recalls & Warnings
11/25/2016
Homeopathic Teething Tablets and Ear Relief Products Containing Belladonna Recalled
On November 24, 2016, Raritan Pharmaceuticals, a contract manufacturer for Homeolab USA, issued a recall of three homeopathic products for infants and/or children which contain belladonna extract. The products may contain belladonna alkaloids, compounds which can have harmful effects in people.
Recalls & Warnings
8/31/2012
Recent Cases of Lead Poisoning From Ayurvedic Medications from India
Public health officials have reported six cases of lead poisoning among foreign-born women who took Ayurvedic herbal products imported from India. The cases were reported by the New York City Department of Health and Mental Hygiene.
Recalls & Warnings
11/07/2015
Seller of "NaturalDoctor" Vitamin C, Echinacea and More Warned for Manufacturing Violations
On October 16, 2015, the FDA issued a warning letter Sound Healing Arts, PC, dba Grounds for Tea, LLC, following a facility inspection which found the company's products, including NaturalDoctor Vitamins C & K3, NaturalDoctor Goldenseal & Echinacea Plus, NaturalDoctor Centella ...
Recalls & Warnings
10/18/2005
FTC Stops False Claims about HGH Oral Spray
On October 18, 2005, the Federal Trade Commission (FTC) announced that, at its request, a federal court issued a temporary restraining order against marketers of oral sprays that supposedly contain human growth hormone (HGH) to stop them from making alleged false and deceptive claims and from ...
Recalls & Warnings
6/14/2007
Marketers of Bogus Growth Hormone Sprays Settle with FTC
On May 29, 2007 the Federal Trade Commission (FTC)announced that two operations that marketed oral sprays that were supposed to help users lose weight, reverse the aging process, and prevent or treat diseases have settled FTC charges that their claims were bogus.
Recalls & Warnings
5/30/2015
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
11/01/2016
FDA Warns Consumers Not to Use Twelve Energy and Sexual Enhancement Supplements
The FDA recently warned consumers not to buy or use the following "energy" and sexual enhancement supplements, which are sold on various websites and in some retail stores, because they were found to contain undeclared drugs:
Recalls & Warnings
12/02/2005
Steroids Detected In Supplement
On November 30, 2005, The Washington Post reported that a dietary supplement marketed to fitness and health enthusiasts on the Internet and in body-building shops contains anabolic steroids, according to a prominent researcher.
Recalls & Warnings
3/06/2015
Nine Male Enhancement Supplements Found to Contain Drugs
On March 2 and March 3, 2015, the FDA warned consumers not to buy or use the following nine male sexual enhancement supplements because they were found to contain an undeclared sildenafil or vardenafil. Each was identified during an examination of international mail shipments.
Recalls & Warnings
4/12/2013
Zicam Advised Against Using Cold Prevention Claim In Advertising
On April 5, 2013, it was reported that the National Advertising Division (NAD) recommended that Matrixx Initiatives, maker of Zicam cold products, stop making claims in its advertising that the product can prevent colds.
Recalls & Warnings
2/07/2013
Growth Factor Supplement For "Size, Strength and Stamina" Recalled Due To Potential Contamination
On January 2, 2013, EonNutra, LLC issued a voluntary recall of specific batches of Soto Supplements Growth Factor Complex 200 GFC 200 (2 fl oz.) liquid dietary supplement due to potential bacterial contamination.
Recalls & Warnings
12/08/2011
HCG Diet Products Don't Work and Are Illegal Says FDA
On December 6, 2011, the U.S. FDA warned consumers to avoid homeopathic HCG weight-loss diet products because they don't work, often make unsupported claims, and are illegal for sale. In addition, some of these products direct user to follow a potentially dangerous diet.
Recalls & Warnings
5/23/2013
Seller of Sexual Enhancement, Cholesterol, Resveratrol Supplements and More Warned For Drug Claims
On May 2, 2013, the FDA issued a warning letter to Alternative Health Supplements, following a review of the company's website, which found statements made about several dietary supplements, including Regenerect, Alligin, Astaxanthin Advantage, HDL Cholesterol Management, Resveratrol, Coral Calcium ...
Recalls & Warnings
10/06/2004
False Claims Made by Marketer of Cortisol-related Weight-Loss Supplements According to FTC
On October 6, 2004, the Federal Trade Commission (FTC)charged marketers of two dietary supplements with claiming, falsely and without substantiation, that their products can cause weight loss and reduce the risk of, or prevent, serious health conditions.
