Use of Magnesium and Probiotics Rise, Multivitamins and Weight Loss Supplements Fall, According to Survey
White Plains, New York, February 28, 2015 — A recent survey of over 10,000 people who use dietary supplements shows the most popular dietary supplement to be fish oil, followed by multivitamins, CoQ10, vitamin D, B vitamins, magnesium, calcium, probiotics, and vitamin C. The order is similar to that of last year's survey, with exception of magnesium overtaking calcium. Use of magnesium among respondents increased to 43.1%, compared to 38.1% last year — a relative growth of 13% and the largest increase among the major supplements. The use of CoQ10, vitamin D, B vitamins, and, most notably, probiotics also increased -- with probiotic use reaching 40.2% of respondents, up from 37.8%. Use of multivitamins and fish oil supplements declined slightly, although they remained the most popular supplements — taken by 60.2% and 65.6%, respectively, of consumers in the survey. 

Out of the top 32 supplements, the largest decrease was in the use of weight loss supplements, which fell to 8% from 10.7% the prior year — a 25% relative decrease. The drop was likely driven by a retraction of a study which had shown a benefit with a green coffee bean extract, as well as government scrutiny of the promotion of weight loss products. The use of glucosamine/chondroitin, resveratrol, and nutrition/protein powders and drinks decreased moderately, while use of melatonin and vitamin K supplements showed moderate increases.

"The changes in supplement use seem to reflect research findings and events that made headlines this past year," said Tod Cooperman, M.D., President of "For example, recent studies show a wide range of benefits with probiotics and magnesium, but indicate more limited applications for resveratrol than the general "life-extending" benefit for which it was originally touted."

The results are based on responses to the most recent Survey of Vitamin and Supplement Users, which has been conducted each November since 2007 among readers of's e-newsletter. Respondents are predominantly heavy users of supplements who, on average, report taking at least 6 different supplements daily and actively seek information about these products.

Respondents also identified where they purchased their supplements and rated 1,709 brands and 891 merchants they used. The supplement brands and merchants receiving the highest ratings on overall consumer satisfaction within their specific market segments are listed on the website.

"We began the annual survey several years ago to direct our product testing toward supplement categories and brands of greatest interest to members," says Tod Cooperman, M.D., president of "It has evolved into an excellent barometer of the nutrition marketplace."

For more information about the survey or to purchase the 142-page survey report, go to or contact Lisa Sabin, Vice President for Business Development, at Subscription and access to's test reports of more than 1,000 products, covering more than sixty types of popular supplements, is available online. is a leading provider of consumer information and independent evaluations of products that affect health and nutrition. Membership to is available online, providing immediate access to independent reviews of more than 1,000 products. The company is privately held and based in Westchester, New York. It has no ownership from, or interest in, companies that manufacture, distribute, or sell consumer products. is affiliated with, an evaluator of online pharmacies, and, which reviews and rates Medicare Part D plans.