Alerts

FDA warns consumers about caffeine powder. 

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

The Food and Drug Administration (FDA) includes caffeine on its list of substances “generally recognized as safe.” FDA’s limit for the amount of caffeine in cola beverages is 71 mg per 12 oz, but caffeine in other foods and beverages is not regulated. Dietary supplement labels often don’t list the exact amount of caffeine, which is often part of a “proprietary blend.” In addition, caffeine is often present in “hidden sources” such as green tea, guarana, etc. However, enough caffeine taken orally—150-200 mg/kg bodyweight, or about 10-14 grams for the average person—can be fatal. That may seem like a lot, but sensitivity to caffeine differs from person to person. In addition, there is limited information on how toxic caffeine might be when combined with other stimulants and ingredients found in dietary supplements. And of course, any amount of caffeine may affect your quality of sleep. For in-depth information about caffeine, read HPRC’s monograph.

FAQ updated 19 May 2014

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