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CL Answer

Do any supplements help for ulcerative colitis?

Find out what supplements & vitamins can help with ulcerative colitis, such as VSL#3, curcumin, aloe or boswellia.

Woman Grabbing Stomach Due To Abdominal Discomfort

Product Review

Choline and Lecithin Supplements Review (Including Phosphatidylcholine, CDP-Choline, and Alpha-GPC)


Product Review

Turmeric and Curcumin Supplements and Spices Review

See Our Top Picks Among Turmeric Products

CL Answer

What are the health benefits of andrographis? Can it treat colds, help with joint pain, or other conditions, and is it safe?

Learn about the health benefits of andrographis, whether it can help relieve cold symptoms, reduce pain and stiffness of osteoarthritis or rheumatoid arthritis, decrease symptoms of ulcerative colitis, or slow the growth of cancer. See the clinical evidence for the branded andrographis extract ParActin. Plus, learn about dosage, side effects and drug interactions with andrographis.


CL Answer

Butyrate Supplements for Gut Health: Does butyric acid really work and is it safe?

Can butyrate supplements improve gut health or help reduce symptoms of irritable bowel syndrome (IBS) or Crohn's disease? Find out what the clinical evidence shows, learn about the different forms of butyrate, including sodium butyrate, calcium-magnesium butyrate, and tributyrate, and get details about products such as BodyBio Sodium Butyrate and Healus Complete Biotic Tributyrin, dosage, safety and cost.

Butyrate Supplements

CL Answer

Does taking curcumin and boswellia together increase their individual anti-inflammatory effects?

Find out if taking boswellia and curcumin together can increase their individual anti-inflammatory effects.'s answer explains.

Curcumin and Boswellia for Knee Pain -- Older woman with osteoarthritis holding knee in pain

Product Review

Probiotic Supplements Review (Including Pet Probiotics)

Probiotics: See What They Really Contain and Our Top Picks

Clinical Update


Supplement for Colitis?

Does taking phosphatidylcholine help with ulcerative colitis? See what the research has shown in the Ulcerative colitis section of our Choline Supplements Review. Also see our Top Pick among phosphatidylcholine supplements.

Also see our answer to the question: Do any supplements help for ulcerative colitis?

CL Answer

Has the probiotic VSL#3 been changed or discontinued? Is Visbiome a good alternative?

Find out if the probiotic formula VSL#3 has been changed and how it compares with Visbiome.'s answer explains.

VSL #3 vs. Visbiome -- box of VSL#3 and Visbiome

Product Review

Psyllium Fiber Supplements Review

Find the Best Psyllium Fiber Supplement and Avoid Lead.

Psyllium Review 2024

Product Review

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

One-Third of Joint Health Supplements Failed to Pass Our Tests. See Which Passed or Failed, and our Top Picks.

Review of Supplements for Joint Pain

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

Do sea moss and carrageenan have health benefits? Are there risks?

Sea moss is promoted for thyroid health, boosting immunity, improving gut health, and other uses. Find out if it works and learn about possible side effects of sea moss and its constituent, carrageenan.

Sea moss in a clear bowl next to a wooden spoon on the countertop

Clinical Update


Butyrate for Colitis?

Does supplementing with butyrate improve symptoms of ulcerative colitis or maintain remission? Find out what research suggests in our updated CL Answer about butyrate supplements for gut health.

Also see our CL Answer about supplements for ulcerative colitis.

Clinical Update


Zinc Deficiency & Bowel Disease

A recent study showed zinc deficiency to be extremely common among people with Crohn’s disease and ulcerative colitis (the most common forms of inflammatory bowel disease or IBD). Find out more and if zinc supplements may help in the Zinc deficiency section of our Zinc Supplements Review.

Learn more about supplements for Crohn's disease and ulcerative colitis.

Clinical Update


Ulcerative Colitis

Find out if drinking coconut water or taking psyllium helped people with active ulcerative colitis in recent studies. Also see our Top Picks among coconut waters and psyllium supplements.

Clinical Update


Psyllium for Colitis?

Can supplementing with psyllium help maintain remission in people with ulcerative colitis? Find out what research suggests in our Psyllium Supplements Review.

Also see our answer to the question: Do any supplements help for ulcerative colitis?

Clinical Update


Fish Oil for Ulcerative Colitis

A special formulation of high-dose fish oil was found to help people with ulcerative colitis remain in remission in a placebo-controlled study. It also reduced levels of a key marker of inflammation. For details, see the Arthritis and Other Inflammatory Diseases section of the Fish Oil Supplements Review.

Clinical Update


Curcumin Helps Ulcerative Colitis

Curcumin has been shown to reduce ulcerative colitis symptoms and maintain remission. Get the details, including dosage and forms, in the What It Does section of the Turmeric and Curcumin Supplements Review. (Also see our Top Picks for curcumin supplements.)

Clinical Update


Curcumin for Ulcerative Colitis?

Some studies have found curcumin helpful when added to medical treatment for ulcerative colitis, but a recent study found no benefit. Find out how this study was different and learn more about other uses of curcumin in the "What It Does" section of the Turmeric & Curcumin Supplements Review, which includes CL's tests and comparisons of popular brands.

Product Review

Fish Oil, Krill Oil, and Algal Oil Omega-3 (DHA & EPA) Supplements Review

See Our Omega-3 Top Picks and Avoid Rancid Fish Oils.

Fish Oil and Other Marine Oil Supplements Reviewed by

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

What is the difference between fish oil and cod liver oil? Is one better than the other?

Find out how regular fish oil and cod liver oil differ including amounts of omega-3s EPA and DHA, vitamin A and vitamin D, which is best to suit your needs.'s answer explains.

Fish Oil vs. Cod Liver Oil -- bottle of cod liver oil pouring into spoon

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 blood cell counts, especially when used in excess.

Woman holding various vitamins and supplements in her hands

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

I read that turmeric may be a GI irritant. I have GI problems and wonder if I should avoid turmeric and curcumin?

Find out if turmeric/curcumin supplements can cause gastrointestinal irritability.

Is turmeric a stomach irritant? -- Turmeric Supplement

Product Review

Coconut Waters Review

Best Coconut Water? See Our Tests and Comparisons of Popular Brands Looking at Sugar, Electrolytes, Taste and Price.

Coconut Waters Reviewed by

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

Product Review

Bone Broth Review

Find the Best Bone Broth. Find Out How Much Collagen and Sodium Is Really In Popular Bone Broths.

Bone Broth Supplements Reviewed by

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.

Zinc Supplements and Lozenges Reviewed by

Clinical Update


Crohn’s Disease, Colitis & Key Nutrients

Experts are advising that people with inflammatory bowel disease, including Crohn’s disease and ulcerative colitis, be monitored for deficiencies in vitamin D and iron.

Also see our Top Picks among vitamin D and iron supplements.

Clinical Update


Probiotics That Do or Don't Work

An expert panel of gastroenterologists reviewed the clinical evidence for probiotics in preventing or treating C. difficile infection, IBS, ulcerative colitis, Crohn's disease, pouchitis, and necrotizing enterocolitis. Find out for which conditions they recommend probiotics and for which they don't in the What They Do section of the Probiotic Supplements Review (we've highlighted their recommendations in yellow). Also see our Top Picks for probiotics.

Clinical Update


Impressive Results with Curcumin in Colitis

A recent study in people with ulcerative colitis not responsive to traditional therapy found that the addition of curcumin to the regimen led to remission in more than 50% of patients. For details about the treatment, as well as our reviews of curcumin products, see the Turmeric/Curcumin Supplements Review >> 

CL Answer

How do the COVID-19 vaccines compare in terms of efficacy, safety and side effects? How, when and where do I get the COVID-19 vaccine?

Find out how the COVID-19 vaccines from Pfizer and Moderna compare and learn how when and where you can get the COVID-19 vaccine.

Older woman getting an injection

Product Review

Vitamin D Supplements Review (Including Calcium, Magnesium, Boron, and Vitamin K)

Find the Best Vitamin D Supplement with the Right Dose

Product Review

B Vitamin Supplements Review (B Complexes, B6, B12, Biotin, Folate, Niacin, Riboflavin & More)

See Which B Vitamins Are ConsumerLab's Top Picks!

Review of B Vitamin Supplements

CL Answer

Does Restore (Biomic Sciences LLC) really improve gut health? What is in Restore?

Learn more about Restore, including clinical studies on gut health, dosage, cost, and safety.

Product Review

Selenium Supplements Review

Choose the Best Selenium Supplement. Find Out If You Need Selenium and Which Supplement Is Our Top Pick.

Selenium Supplements Reviewed by

Product Review

NAC (N-Acetyl Cysteine) Supplements Review

Choose the Best N-Acetyl Cysteine Supplement. See Our Tests of Popular NAC Supplements and Top Picks for Quality and Value.

N-acetyl cysteine (NAC) supplements tested by

Product Review

Joint Health Supplements for Pets Review (Glucosamine, Chondroitin, MSM & Boswellia)

See Which Pet Supplements for Joint Health Passed Our Tests and Which Didn't!

Joint Health Supplements for Pets

Product Review

Aloe Juices, Gels, and Supplements Review

How Much Aloe is Really in Aloe Products? Find Out and See Our Top Picks.

Product Review

Lion's Mane and Chaga Supplements Review

Read Labels Carefully -- Many Can Mislead

Lion's Mane and Chaga Supplements tested by

Product Review

Iron Supplements Review (Iron Pills, Liquids and Chews)

See Which Iron Supplements Are CL's Top Picks for Different Needs

Product Review

Digestive Enzyme Supplements Review

Big Differences in Strength Found Among Digestive Enzyme Supplements. CL Tests Reveal Which Are Best.

News Release

June 29, 2023

ConsumerLab Tests Reveal the Best Turmeric and Curcumin Supplements & Spices

White Plains, New York, June 29, 2023 —  Turmeric and curcumin (a key compound in turmeric) are promoted for uses including osteoarthritis, seasonal allergies, and ulcerative colitis, as well as improving cognition and reducing symptoms of depression.

News Release

September 27, 2019

Best Turmeric and Curcumin Supplements and Spices Identified by ConsumerLab

White Plains, New York, September 27, 2019 — Turmeric and curcumin (the major compound in turmeric) are among the most popular supplements, promoted to reduce inflammation and help with conditions such as arthritis as well as indigestion and depression.

Recalls & Warnings

May 30, 2020

FTC Sends Refund Checks for TrueAloe and AloeCran

On May 26, 2020, the FTC announced it is mailing 22,581 checks totaling more than $470,000 to consumers who purchased deceptively marketed supplements, TrueAloe and AloeCran.

News Release

May 15, 2019

ConsumerLab Tests Reveal Big Differences in Digestive Enzyme Supplements

White Plains, New York, May 15, 2019 — Digestive enzyme supplements can help improve digestion and the absorption of nutrients, and may reduce symptoms of indigestion. But to work, they must provide a certain amount of enzyme activity.

News Release

February 03, 2017 Shows How Much Choline is Really in Supplements -- Tests Phosphatidylcholine (From Soy Lecithin), Citicoline, Alpha-GPC and Other Choline-Containing Supplements, Identifying Top Picks

White Plains, New York, February 3, 2017 — Choline is an essential nutrient important for liver and brain function. It can be obtained from the diet and most people also produce significant amounts in their bodies.

News Release

February 26, 2014

Mislabeling of Some Joint Health Supplements with Glucosamine, Chondroitin, Boswellia, and MSM According to -- 38 Supplements Tested, Including Products for Dogs and Cats --

White Plains, New York, February 26, 2014 — Glucosamine, chondroitin, Boswellia, and MSM are popular dietary supplement ingredients for treating symptoms of osteoarthritis — worn joint cartilage.

News Release

December 16, 2013

What's Really in Turmeric Supplements and Spices? You May Not Want to Know -- 33% of Turmeric/Curcumin Supplements Fail's Review; Filth Found in Spices

White Plains, New York, December 16, 2013 — Supplements containing the herb turmeric or its key constituent, curcumin, are popular treatments for inflammatory diseases. ConsumerLab.

News Release

August 31, 2012 tests selenium supplements -- Finds one with less than 25% of listed amount

White Plains, New York, August 31, 2012 — announced results today of its Product Review of Selenium Supplements. Among the supplements selected by for testing, one was found to contain only 23.

Clinical Update


Thiamin Deficiency from Bowel Disease

People with inflammatory bowel disease (such as Crohn’s or colitis) can develop thiamin (vitamin B-1) deficiency, which can lead to life-threatening brain injury, as noted in a recent review of 31 cases. Learn more about this and other causes of thiamin deficiency in the Thiamin section of our B Vitamin Supplements Review.

Recalls & Warnings

October 22, 2019

Seller of TrueAloe and AloeCran Settles Charges of Making False Claims

NatureCity, LLC, has agreed to settle Federal Trade Commission (FTC) charges that they deceived consumers by making false claims about their TrueAloe and AloeCran products.

News Release

February 16, 2011

Some turmeric and curcumin supplements fail quality review -- finds 20% of turmeric supplements selected for review deliver less than 15% of promised compounds

WHITE PLAINS, NEW YORK — FEBRUARY 16, 2011 — Supplements containing the herb turmeric or its key compound, curcumin, have become popular in the U.S. cautioned today that two out of ten turmeric products recently selected for quality testing were found to provide only 7.

Recalls & Warnings

July 01, 2015

Undeclared Drugs Found In Male Enhancement Supplements

On June 10, 2015, the FDA issued a warning letter American Lifestyle, following tests which found the company's sexual enhancement supplements Vicerex and Sudibil-Xr to contain the undeclared drugs propoxyphenyl thioaildenafil and tadalafil.

Recalls & Warnings

September 13, 2013

Metagenics Warned For Misbranding of Medical Foods and Drug Claims

On August 13, 2013, the FDA issued a warning letter to Metagenics, Inc.

Recalls & Warnings

March 01, 2023

Seller of Dr. Miller’s Herbal “Detox” Teas Warned by FDA for Drug Claims

On February 3, 2023, the FDA issued a warning letter to Jackson Health & Wellness Clinic after inspection of the company’s website found statements about the company’s Dr. Miller’s Holy Tea, Dr. Miller’s Super Holy Tea, Dr. Miller’s Ultimate Tea, Dr.

Recalls & Warnings

October 18, 2017

FDA Warns Seller of Arthritis, Blood Pressure, Diabetes Supplements For Making Drug Claims

On August 15, 2017, the FDA issued a warning letter to Years to Your Health, Inc., following an inspection of the company's website which found a number of their products to be misbranded, as they contained drug claims.

Recalls & Warnings

May 29, 2013

Seller of Colloidal Silver, Noni Juice and Noni Supplements Warned For Drug Claims

On May 16, 2013, the FDA issued a warning letter to Matrix Health Products, Inc.