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dehydroepiandrosterone

In the body, it is produced by the adrenal glands and your body automatically converts it to testosterone.

The suppliment, DHEA, is a precursor to testosterone. Injesting it, I am highly skeptical that it can be converted to testosterone.
When I took it for a while, I felt energized. I wouldn't believe any of the body building or anti-aging claims that I've read.