, LLC (“CL”) is the leading U.S. provider of independent test results and information to help consumers and healthcare professionals identify the best quality health and nutrition products. It publishes results of its tests in comprehensive reports at CL also conducts an annual Survey of Vitamin & Supplement Users. has perhaps the highest testing standards of any third party group certifying the quality of dietary supplements. is also the only third-party verification group that freely publishes its testing methods and quality criteria/standards. 

Since its founding in 1999, CL has tested more than 5,600 products, representing over 850 different brands and nearly every type of popular supplement for adults, children, and pets.

consumerlab top brands

Top-rated Brands by





Catalog/Internet Brand


ProCaps (Andrew Lessman)

Life Extension

Healthcare Practitioner Brand

Designs for Health

Pure Encapsulations

Klaire Lab

Health Food Store Brand

Carlson Lab


Herb Pharm

Discount/Warehouse Brand

Kirkland (Costco)

Kirkland (Costco)


Food/Drug/Mass Broad Product Line

Nature Made

Nature Made

Nature Made

Pharmacy Brand




Vitamin Store Brand

Vitamin Shoppe

Vitamin Shoppe

Vitamin Shoppe

popular brand life extension 保健品 consumberlabLife Extension was founded in Fort Lauderdale, FL in 1983. This company now offers over 350 premium-quality supplements and over 2,000 other brand products. In 2018, not only did it rank as the No. 1 in Internet/Catalog merchant of supplements in, but also its multivitamin,  Omega-3s and resveratrol all won the highest rank. The company offers customers FREE access to an expert team of naturopaths, nutritionists, and nurses who can answer their health-related questions. Life Extension Magazine® is the ultimate resource on staying healthy and living better. This company also has a one year return policy.

consumerlab top brands procaps

Andrew Lessman founded ProCaps Laboratories in 1979.  All its products are made in a solar-powered temperature-controlled manufacturing facility and warehouse located in Henderson, Nevada. It claims to be the world’s only major manufacturer producing a complete line of 100% additive-free vitamin formulas with no colors, binders, fillers, and other additives. 

In 1965, Carlson Lab began with a single vitamin E product in Founder Susan Carlson’s small Chicago apartment and quickly grew to offer the most complete line of all-natural vitamin E supplements. Today, the company produces pure, quality, award-winning vitamins, minerals, fish oils, and other nutritional supplements in more than 200 SKUs. In 2017, it was named as No.1 Health Food Store Brand by ConsumberLab.

consumerlab top brands kirkland

Kirkland Signature is Costco’s private label. It is sold by Costco at their website and warehouses, and is trademarked by the company. Membership is required to shop at Costco. You may enjoy their relatively low price, convenience and for the fact that they sell in bulk. However, their supplements are not at the top quality  level.

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