Be more than happy to tell him - I am a former competitive bodybuilder and I can guarantee you what works and what doesn't. Don't be fooled by an endorsement deal. Open any muscle magazine with guys schlepping product and 95% + are not actually using it.
You probably think that McGuire and Bonds only ever used creatine and andro? Wrong, wrong, wrong. Just by looking at those two I could probably tell you most of the things they were on.
Also, whoever posted about andro has it mostly right ( a great post by the way). Problem is andro is very weak when it comes to the testosterone effect yet very strong in its conversion to estrogen. The excess estrogen occupies the receptor sites so testosterone does not get utilized. Not only hypogonadism, but also gynocomastia - commonly known a B*%&! Tits.