I was a little skeptical of this product at first... Then the raging sex drive kicked in and then came the incredible pumps! used this stuff for about 8 weeks and used TEST DRIVE for my PCT. it took about 3-4 days for it to start and take effect and by week two i was adding bw 10-20lbs to every lift i was doing every time i went in the gym. Didnt experience acne or abnormal hair growth. started my pct about 2 weeks before dropping the Sust but still felt a significant drop in sex drive. overall gained about 12 lbs but lost about 5 within a month, prob due to working in the heat tho. Did keep almost all of the strength gains! very effective oral supplement