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Product Review

L-Arginine Supplements Review

Choose the Best L-Arginine Supplement. Find Out Which L-Arginine Supplement Passed CL's Tests.

L-Arginine Supplements Reviewed by ConsumerLab.com

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

News Release

April 14, 2020

ConsumerLab Tests Reveal Best Probiotic Supplements and Those With Quality Issues

White Plains, New York, April 14, 2020 — Probiotic supplements may be helpful for conditions including antibiotic-associated diarrhea, irritable bowel syndrome, and respiratory infections.

News Release

February 25, 2018

Top-rated Vitamin and Supplement Brands and Merchants for 2018 Based on Consumer Satisfaction

White Plains, New York, February 25, 2018 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 11,446 responses collected in late November and early December 2017.

News Release

February 25, 2016

Top-rated Vitamin and Supplement Brands and Merchants for 2016 Based on Consumer Satisfaction

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 11,534 responses collected in November, 2015. Respondents gave ratings for 963 brands and 399 merchants.

News Release

November 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.

News Release

February 25, 2015

Top-rated Vitamin and Supplement Brands and Merchants for 2015 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 10,329 responses collected in November, 2014. Respondents gave ratings for 1,709 brands and 891 merchants.

News Release

February 12, 2014

Top-rated Vitamin and Supplement Brands and Merchants for 2014 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 10,326 responses collected in November, 2013. Respondents gave ratings for 1,639 brands and 788 merchants.

News Release

November 25, 2013

Many Probiotic Supplements Fall Short on Listed Amounts of Helpful Organisms

White Plains, New York, November 25, 2013 — Probiotic supplements and foods containing "friendly" bacteria or yeast have become popular among people hoping to improve bowel function, immunity, and even mood.

News Release

February 09, 2012

Probiotics grow in popularity but don't always deliver on promises says ConsumerLab.com -- New report provides guidance to consumers

White Plains, New York, February 9, 2012 — Probiotic supplements and foods containing "friendly" bacteria or yeast have become popular options for people hoping to improve bowel function or boost immunity. But many customers are confused by the vast array of choices.

News Release

November 16, 2009

ConsumerLab.com finds many probiotics don't deliver listed ingredients

White Plains, New York November 16, 2009 — Many probiotic supplements do not contain the number of viable organisms listed on their labels according to a new report from ConsumerLab.com.

News Release

August 04, 2009

Most vitamin E supplements pass testing, but what seems natural may be synthetic according to ConsumerLab.com -- New review of vitamin E supplements, oils, and creams released today

White Plains, New York — November 16, 2009 — Many probiotic supplements do not contain the number of viable organisms listed on their labels according to a new report from ConsumerLab.com.