FDA warns consumers about caffeine powder. 

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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


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.

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OPSS Frequently Asked Questions (FAQs)

If you have a question about the use or safety of dietary supplements, cheOPSS Question Mark Pills 2ck our collection of Frequently Asked Questions. If you don't find what you're looking for, please contact us using the "Ask the Expert" button on the OPSS homepage.


General FAQs
The most frequently asked questions about dietary supplements in general.
Dietary Supplement Ingredients
Answers to questions we've received about dietary supplement ingredients.
Answers to frequently asked questions about performance and dietary supplements.
Weight Loss
Answers to frequently asked questions about weight loss and dietary supplements.
Answers to other frequently asked questions about dietary supplements.