Alerts

FDA advises consumers to stop using any supplement products labeled as OxyElite Pro or VERSA-1. Please see the following advisories: FDA -10/08/13, FDA - 10/11/13 and CDC - 10/08/13.

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Announcements

New article on reporting side effects of supplements
Just published in The New England Journal of Medicine: A recent article brings up dietary supplement issues you need to be aware of and discusses how dietary supplement side effects could be monitored better. A PDF of the April 3rd article is available free online.

3rd International Congress on Soldiers’ Physical Performance
August 18-21, 2014
The ICSPP delivers innovative scientific programming on soldiers’ physical performance with experts from around the world.

DMAA list updated for April 2014

Fueling Performance Photo Campaign
Share photos of how you fuel your performance and be featured on our Facebook page!

Dietary supplement module
Earn continuing education credits (if eligible) for this two-hour online module.

Operation LiveWell

Performance Triad

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HPRC's human performance optimization (HPO) website is for U.S. Warfighters, their families, and those in the field of HPO who support them. The goal is Total Force Fitness: Warfighters optimized to carry out their mission as safely and effectively as possible.

Question

How much caffeine is safe?

OPSS Answer

Caffeine is included on the Food and Drug Administration (FDA) list as a substance “generally recognized as safe.” However, the FDA has established a maximum concentration for caffeine in cola beverages of 71 mg per 12 oz. Other than colas, the caffeine content of food and beverages is not regulated. Dietary supplement labels frequently do not give the exact amount of caffeine since it is often part of a “proprietary blend,” and caffeine is combined with other caffeine-containing herbs such as black or green tea leaf extract, guarana, maté (yerba maté), and cola nut. According to scientific evidence, an acute oral dose of caffeine is 150-200 mg/kg bodyweight—about 10-14 grams for the average person—and can be fatal. However, sensitivity to caffeine differs from person to person, which has not been addressed from a toxicity perspective. Also, limited evidence is available on the toxicity of caffeine when combined with the other stimulants and ingredients in dietary supplement products. And of course, any amount of caffeine may affect your quality of sleep. For more information on caffeine, read the monograph in HPRC’s Dietary Supplement Classification System series.

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