Athletes who use this over-the-counter supplement believe it stimulates production of the hormone testosterone in the body. They also believe it builds muscle mass, repairs injury more rapidly, and enables them to train harder.

Research Results:

Little evidence exists to support claims about its effectiveness or ability to increase muscle mass.


There are also no studies available on androstenedione's safety. Currently researchers are trying to find out what doses raise testosterone levels high enough to have an effect on performance and if these levels can cause harm to the user.

Return to Supplement Guide

Take Our Survey


We need your help! Periodically we conduct a survey of our visitors and use the results to help guide our planning process for future programming. We really want to know what you think, and your answers will help us improve the Shape Up America! organization. Please take a few minutes to share your questions, thoughts and ideas. Your responses will be kept strictly confidential.

Btn Click Here

Donate to SUA


Please consider a donation to Shape Up America! Your tax-deductible contribution helps us develop new initiatives to address the problem of obesity in America.

Btn Click Here