Product Reviews and Information for Liver Health and Detoxification
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Product Review
Vitamin A Supplements Review, Including Beta-Carotene and Cod Liver Oil
Find the Best Vitamin A Supplement. Best Quality Vitamin A Supplements Identified, Including Cod Liver Oil.
CL Answer
What is fermented cod liver oil, such as Blue Ice? Is it better than regular cod liver oil?
Fermented cod liver oil information including if Rosita & Blue Ice (Green Pastures) is as good a source of vitamins and DHA as regular.
CL Answer
Is there a risk of liver toxicity with certain supplements?
Find out if there is risk of liver damage from supplements such as green tea, niacin, red yeast rice and vitamin A.
CL Answer
Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Find out if supplements such as vitamin E, fish oil, milk thistle, curcumin, choline, probiotics, vitamin D, reishi mushroom, or extra virgin olive oil are beneficial for fatty liver disease and learn which diet (Mediterranean, ketogenic, DASH, or fasting diets) seems to have greatest benefit.
CL Answer
Desiccated Beef Liver and Beef Organ Supplements: Nutrition & Safety
Description of desiccated beef liver, including what it is used for, its nutrient content, and safety concerns.
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. ConsumerLab.com's answer explains.
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.
CL Answer
Should I be concerned about pyrrolizidine alkaloids in herbal supplements?
Find out which herbal supplement ingredients contain pyrrolizidine alkaloids (PAs), learn why these constituents are a safety concern, and find out how supplements containing these ingredients are regulated in the U.S. and Europe.
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.
CL Answer
Are there any supplements I should avoid when taking acetaminophen (Tylenol)?
Find out if there are any supplements that should be avoided when taking acetaminophen (Tylenol).
CL Answer
Is it true that fish oil supplements may contain soy? I'm allergic!
Learn about soy content in fish oil and cod liver oil, including safety for those with soy allergies.
CL Answer
Are there any serious side effects with Lovaza or Epanova (prescription fish oil)? If so, would these also apply to generic versions of these drugs and to fish oil supplements?
Understand the side effects of prescription fish oil like Lovaza and Epanova, and find out if the generic fish oils are effective and safe.
CL Answer
Is cinnamon dangerous for my liver? I put about a teaspoon of it in my oatmeal every day.
The most common form of cinnamon contains a naturally occurring liver toxin called coumarin. Find out how much cinnamon is safe to consume, and how often it can be consumed. Also learn how much coumarin ConsumerLab found in popular cinnamon and spices.
CL Answer
I am very concerned about getting too much vitamin A. Is there danger in getting too much vitamin A if I take fish oil, which I've heard contains a lot of vitamin A, in addition to my multivitamin?
Find out if taking vitamin A along with fish oil can lead to an excess of vitamin A and how to avoid vitamin A overdose.
CL Answer
Does Provitalize work for weight loss and is it safe?
Find out if taking Provitalize, a probiotic supplement that also contains turmeric extract, moringa leaf extract, curry leaf extract and piperine (BioPerine), relieves joint pain, decreases abdominal fat, or helps with weight loss.
CL Answer
Is it safe to consume fish oil as a long-term food supplement?
Learn more about fish oil supplement safety including long-term use, side effects, and more.
Clinical Update
2/18/2022
Fish Oil for Fatty Liver?
Can fish oil supplementation help reduce liver fat and fibrosis in people with non-alcoholic fatty liver disease (NAFLD)? Find out what a recent study suggests in the Liver Disease section of our Fish Oil Supplements Review.
Also see our article about Supplements for Fatty Liver Disease.
Clinical Update
8/09/2022
Vitamin E for Fatty Liver Disease?
Can vitamin E improve liver health in people with non-alcoholic fatty liver disease (NAFLD)? Get the details in the Liver Disease section of our Vitamin E Supplements Review.
Also see our CL Answer about Supplements for Fatty Liver Disease.
Clinical Update
12/12/2023
Tocotrienols for Fatty Liver?
Does taking tocotrienols, a form of vitamin E, improve liver function among people with non-alcoholic fatty liver disease (NAFLD)? Find out what research suggests in the Liver disease section of our Vitamin E Supplements Review.
Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
7/18/2024
Fatty Liver: Does Vitamin E or DHA Help?
Does taking high-dose vitamin E or the omega-3 fatty acid DHA reduce liver fat in people with fatty liver disease? Find out what a recent study showed in the Liver disease section of our Vitamin E Supplements Review.
Also see out article: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
1/23/2025
Dose For Your Liver?
The supplement Dose For Your Liver is promoted for improving liver health and signs of fatty liver disease, but does research support this? Find out in our article about supplements and diets for fatty liver.
Clinical Update
3/10/2025
Liver Injury Concern with Garcinia
Several cases of liver injury and liver failure have been linked with the use of supplements containing Garcinia, a popular ingredient for weight management. Get the details in the Concerns and Cautions section of our Garcinia Cambodia (HCA) Supplements Review.
Also see: Is there a risk of liver toxicity with certain supplements?
Clinical Update
4/07/2025
Prebiotic for Fatty Liver?
Does taking a prebiotic supplement with dieting reduce weight or improve liver health among people with fatty liver disease? Find out what a recent study showed in the What It Does section of our Prebiotic Supplements Review.
Also see our article: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
7/22/2024
Quercetin for Fatty Liver?
Can taking quercetin reduce liver fat in people with fatty liver disease? Find out what a recent study showed in the What It Does section of our Quercetin Supplements Review, which includes our Top Picks for quercetin.
Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
5/04/2024
L-Citrulline for Fatty Liver?
Does taking L-citrulline decrease liver fat or have other benefits in people with metabolic-associated fatty liver disease (MAFLD)? See what a recent study found in the What It Does section of our L-Citrulline Supplements Review, which includes our Top Picks among L-citrulline supplements.
Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
5/29/2024
Curcumin for Fatty Liver?
Did taking curcumin decrease liver fat in people with fatty liver disease? Find out what a recent study showed in the Fatty Liver section of our Turmeric and Curcumin Review. Also see our Top Picks among turmeric and curcumin supplements and spices.
Clinical Update
6/18/2024
Curcumin for Fatty Liver?
Does curcumin reduce liver inflammation and scarring in people with advanced fatty liver disease? Find out in the Fatty Liver Disease section of our Turmeric and Curcumin Supplements and Spices Review, which includes our Top Picks for curcumin and turmeric.
Clinical Update
6/28/2024
Propolis for Fatty Liver?
Does supplementing with propolis (a waxy substance in bee hives) improve liver health among people with fatty liver disease? Find out what a study showed in our article about supplements for fatty liver disease.
Clinical Update
2/17/2023
TUDCA for Fatty Liver?
TUDCA supplements are commonly promoted for treating liver disorders, but is there evidence supporting the use of TUDCA for fatty liver disease? Find out in our updated CL Answer about supplements for fatty liver.
Also, see our CL Answer about TUDCA for details about its other uses, potential safety concerns, and cost.
Clinical Update
7/06/2022
Curcumin for Fatty Liver?
Does supplementing with curcumin decrease liver fat in people with fatty liver? See what a recent study found in the What It Does section of the Turmeric and Curcumin Supplements and Spices Review.
Also see our answer to the question: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
7/31/2021
Coffee And Fatty Liver Disease?
Can drinking coffee help prevent fatty liver disease and liver fibrosis (scarring)? Find out what research suggests in our CL Answer about supplements and diets for fatty liver disease.
Clinical Update
8/07/2021
Bergamot for Fatty Liver?
Can bergamot help reduce cholesterol or liver fat in people with fatty liver disease? Find out in our updated answer about Supplements and Diets for fatty Liver Disease.
Clinical Update
4/22/2022
Vitamin E for Fatty Liver Disease?
Can supplementation with vitamin E benefit people with non-alcoholic fatty liver disease (NALFD)? See what the American Heart Association recently advised in the What It Does section of our Vitamin E Supplements Review.
Also see our answer to the question: Do any supplements help with fatty liver disease?
Clinical Update
2/22/2023
Spirulina for Fatty Liver?
Find out if spirulina or brown seaweed help with non-alcoholic fatty liver disease (NAFLD) in our updated CL Answer about supplements for fatty liver. Also see our Top Pick for spirulina.
Clinical Update
2/24/2023
Curcumin for Fatty Liver?
Does curcumin supplementation decrease cholesterol, triglycerides, or liver enzyme levels in people with non-alcoholic fatty liver disease (NAFLD)? Find out what a recent study showed in the What It Does section of our Turmeric and Curcumin Review. Also see our Top Picks among turmeric and curcumin supplements and spices.
Clinical Update
10/18/2022
Liver Injury From Turmeric/Curcumin
Several cases of turmeric/curcumin-related liver injury have been reported in the U.S. in recent years. Learn the most common symptoms and who is most likely to be affected in the Concerns and Cautions section of our Turmeric and Curcumin Supplements and Spices Review.
Also see our Answer to the question: "Is there a risk of liver toxicity with certain supplements?"
Clinical Update
2/14/2023
Supplements for Fatty Liver?
Find out how the following supplements, and other approaches, affect liver function in people with non-alcoholic fatty liver disease (NAFLD):
Clinical Update
3/19/2024
Olive Oil & Fatty Liver
Olive oil seems to offer benefits to people with fatty liver disease. See what a recent study showed in our Extra Virgin Olive Oil Review, which includes our Top Picks among olive oils.
Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
4/09/2024
Saffron for Fatty Liver?
Did taking a saffron supplement decrease liver fat in people with fatty liver disease? Find out what a recent study showed in our Saffron Supplements Review. Also see our Top Picks among saffron supplements.
Clinical Update
11/10/2023
Ashwagandha & Liver Injury
Eight new cases of liver injury were recently reported among people taking ashwagandha supplements. Get the details, including the doses taken and common symptoms in the Concerns and Cautions section of our Ashwagandha Supplements Review.
Also see our answer to the question: Is there a risk of liver toxicity with certain supplements?
Clinical Update
12/05/2023
Fatty Liver & C15:0
Did supplementing with C15:0 help people with fatty liver disease? Find out what a recent study showed in our article about the health effects of C15:0.
Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
9/19/2024
Niacin-Induced Liver Failure
Be aware of the risk of liver injury from use of very high dose niacin, as recently reported in an otherwise healthy, young woman who was taking niacin to manage anxiety and depression. Get the details in the Niacin (Nicotinic Acid) (B-3) section of our B Vitamin Supplements Review, which includes our Top Picks for B vitamins.
Also see: Is there a risk of liver toxicity with certain supplements?
Clinical Update
10/14/2024
Turmeric-Related Liver Injury
Eleven more cases of turmeric-related liver injury in the U.S. were recently analyzed. Get the details in the Concerns and Cautions section of our Turmeric and Curcumin Supplements Review, which includes our Top Picks among supplements and spices.
Also see: Is there a risk of liver toxicity with certain supplements?
Clinical Update
12/13/2024
Liver Concern With Athletic Greens AG1
There have been many reports linking the supplement AG1 by Athletic Greens with liver injury – although these do not prove cause-and-effect. Get the details in the Concerns and Cautions section of our Fruits, Veggies, and Other Greens Supplements Review, which includes our et the details in the Top Picks among products.
Also see: Is there a risk of liver toxicity with certain supplements?
Clinical Update
1/13/2025
Viviscal and Liver Injury?
A CL member who took the hair growth supplement Viviscal attributed liver damage to the product. Find out if there have been similar reports, or ingredients in Viviscal linked with liver injury, in our article about supplements for hair.
Clinical Update
9/17/2021
Vitamin C For Fatty Liver?
Can taking high-dose vitamin C improve liver function or insulin resistance in people with NAFLD (non-alcoholic fatty liver disease)? Find out what a recent study showed in the What It Does section of our Vitamin C Supplements Review. Also see our Top Picks among vitamin C supplements.
Clinical Update
10/05/2021
Diet for Fatty Liver Disease
Find out the most important dietary considerations for people with fatty liver disease in our updated answer to the question: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
7/27/2021
Diets for Fatty Liver Disease
Are some diets more beneficial than others for fatty liver disease? Find out in our CL Answer about supplements and diets for fatty liver disease.
Clinical Update
6/20/2014
Green Tea and Liver Toxicity
Green tea extract was listed as one of the most common dietary supplements linked to liver injury in a newly published guideline for diagnosing and treating drug-induced liver injury. Find out what one of the authors of the guideline had to say about the catechin content of some green tea supplements, and get our test results showing the amounts of catechins in green tea supplements in the Green Tea Supplements, Drinks and Brewable Teas Review >>
Clinical Update
7/12/2016
Vitamin D & Fatty Liver
Vitamin D supplementation may decrease fat accumulation in the liver in people with non-alcoholic fatty liver disease who are vitamin D deficient. Get the details in the "What It Does" section of the Vitamin D Supplements Review >>
Clinical Update
10/25/2014
Probiotics Reduce Cholesterol / Improve Liver Function
Adding probiotic organisms to yogurt appeared to reduce LDL ("bad") cholesterol in a study of people with nonalcoholic fatty liver disease, a common condition. Levels of liver enzymes also improved and more weight loss occurred when people ate the probiotic yogurt, in contrast to those who ate regular yogurt. The probiotic organisms used in this study are found in several products recently tested by ConsumerLab.com. See the details in the Probiotic Supplements Review >>
Clinical Update
8/02/2022
Supplements & Liver Injury?
We’ve added four additional supplements to our list of more than a dozen Supplements That May Cause Liver Toxicity.
News Release
October 26, 2018
Best Vitamin A Supplements, Including Cod Liver Oils, Identified by ConsumerLab
White Plains, New York, October 26, 2018 — Vitamin A is necessary to maintain good vision, skin, and immune functioning, and supplementation can be beneficial for certain conditions — although most people get enough from food and getting too much vitamin A can be dangerous.
News Release
January 20, 2015
ConsumerLab.com Identifies Best Vitamin A Supplements, But Cautions That Most People Don't Need Them
White Plains, New York, January 20, 2015 — Vitamin A supplements can save your sight and reduce your risk of infection if you are vitamin A deficient. However, deficiency is rare in the U.S., where people are more likely to be at risk for excess vitamin A.
News Release
November 26, 2012
Tests Show Many Milk Thistle Supplements Low in Key Component -- Seven of Eleven Products Fail ConsumerLab.com Testing of Herb Used in Diabetes and Liver Diseases
White Plains, NY, November 26, 2012 — Recent tests by ConsumerLab.com of eleven milk thistle supplements show that only four met ConsumerLab.com's quality standards.
News Release
September 21, 2011
Not all vitamin A supplements pass ConsumerLab.com tests -- New report reviews beta-carotene and cod liver oil supplements
White Plains, New York — September 21, 2011 — Recent tests of vitamin A supplements by ConsumerLab.com found one to contain only 54.3% of its listed amount of vitamin A. Another product mislabeled alpha carotene as vitamin A.
Recalls & Warnings
February 22, 2024
Herbalife Shake & Protein Drink Mix, Aloe, Linked With Case of Liver Injury
A 13-year-old boy in Texas developed liver failure and hepatitis-associated aplastic anemia after consuming two Herbalife products and an aloe vera beverage over a period of months, according to a report published on February 12, 2024 in the Journal of Pediatric Gastroenterology and ...
Recalls & Warnings
August 14, 2023
Liver Injury Linked to "Immune Booster" Supplement Sold on Amazon
A 27-year-old woman in Pennsylvania was admitted to intensive care for drug-induced liver injury after taking Prodigy Life HRP-AID, a supplement sold on Amazon and promoted as an "immune system booster" to reduce the intensity and frequency of cold sore outbreaks, according to a ...
Recalls & Warnings
April 10, 2021
Companies Deceived Consumers About Fish Oil for Liver Disease, Says FTC
On April 1, 2021, the Federal Trade Commission (FTC) announced that fish oil supplement manufacturer BASF SE and its U.S.
Recalls & Warnings
January 04, 2020
Hormonal Balance Supplement Tied to Liver Failure
An otherwise healthy 23-year old woman in Texas is reported to have recently developed liver failure (requiring a liver transplant) after taking the supplement Balance (from Alani Nu) for four months.
Recalls & Warnings
November 21, 2017
Health Canada Calls for Stronger Warnings of Liver Risk on Green Tea Extract Products
On November 15, 2017, Health Canada (the Canadian equivalent of the FDA) recommended stronger warning statements about the risk of liver toxicity on labels of supplements containing green tea extract sold in Canada.
Recalls & Warnings
March 25, 2002
FDA Advises Consumers of Risk of Severe Liver Toxicity with Kava
On March 25, 2002 the U.S. Food and Drug Administration (FDA)issued a Consumer Advisory, as well as a letter to health care providers, advising of the potential risk of severe liver injury associated with the use of kava-containing dietary supplements.
Recalls & Warnings
November 04, 2016
Liver Injuries Linked With Dietary Supplement Use on the Rise
The number of liver injuries associated with dietary supplement use has increased substantially in recent years, according to a recently published study in the journal Hepatology.
Recalls & Warnings
January 07, 2002
Liver Toxicity with Kava
As announced in a December 19, 2001 letter to healthcare professionals, The Food and Drug Administration (FDA) is investigating whether the use of dietary supplements containing kava (also known as kava kava or Piper methysticum) is associated with liver toxicity.
Recalls & Warnings
February 15, 2006
New Zealand Warns of Liver Toxicity from Black Cohosh
On February 9, 2006, New Zealand's Therapeutic Goods Administration (TGA) announced new labelling and consumer information for medicines containing Black cohosh (Cimicifuga racemosa).
Recalls & Warnings
May 01, 2009
FDA Warns Consumers to Stop Using Hydroxycut -- Product Being Tested by ConsumerLab.com
On May 1, 2009, the U.S. Food and Drug Administration warned consumers to immediately stop using Hydroxycut products by Iovate Health Sciences Inc., of Oakville, Ontario and distributed by Iovate Health Sciences USA Inc. of Blasdell, N.Y.
Recalls & Warnings
June 27, 2007
Warning Labels to be Required for Green Tea and Black Cohosh Products
On June 26, 2007, the U.S. Pharmacopeia (USP) Dietary Supplements Information Expert Committee (DSI-EC) voted to require cautionary statements on the labels for green tea extracts and black cohosh dietary supplements.
Recalls & Warnings
May 18, 2012
Caution with Butterbur Indicated by UK Warning
England's Medicines and Healthcare Products Regulatory Agency (MHRA) advised consumers in early 2012 not to take unlicensed butterbur (Petasites hybridus) herbal products due to potential health risks.
Recalls & Warnings
January 02, 2004
Canada Reiterates Warning on Products Containing Kava
On December 23, 2003, Health Canada reminded Canadian consumers of the serious risks associated with the use of products containing kava.
Recalls & Warnings
August 25, 2002
Canadian Recall and Stop-Sale Order on All Kava Products
Health Canada is issuing a stop-sale order for all products containing the herb kava after a safety assessment concluded there is insufficient evidence to support their safe use. The department is also requesting the recall of these products from all levels of the market.
Recalls & Warnings
May 23, 2013
Maker of Liver Detox and Insulin Supplements Warned For Drug Claims
On April 24, 2013, the FDA issued a warning letter to Glucorell, Inc.
Recalls & Warnings
September 05, 2013
Seller of Herbal Supplements and "Tonics" Warned For Manufacturing Violations and Drug Claims
On May 24, 2013, the FDA issued a warning letter to Sundial Herbal Products following a facility inspection which found the company's products, including Woman Back Tonic, Koromantee, Wood and Root Tonic, Arthritis, Asthma, Diabetics, Sundial Ashanti Weight Loss Energy Lifter, Appetite Suppresser, ...
