The real life efficacy of many otc supplements is highly unsubstantiated. I have been on 400mg/day of 6-oxo for three weeks and I thought it was working, but not anymore. I am running test enanth 800mg/week, test prop, eq, and fina (in week 4 of all this) and I started nolva therapy today at a very low dose. I will throw out the other 3 bottles of 6-oxo. It is not worth it. No man wants to have boobs. Take a gamble on something else. If you are playing with the real deal, don't take the chance, there is a big difference between prohormones and test injections.
Good luck.