SO thanks again to PES for letting me try this finally. I will start off with the positives. I noticed an increase in appetite and fullness in muscles at ~ 3days. This lasted all day which was nice. Mywas hard to measure since I recently switched from a 6-8 rep range to a 10-12 rep range and am getting adjusted to the new weight. I did however notice from day one I got a mild headache that lasted all day. I initially took it at 4 caps spread through the day on off days and 1 before and after on lifting days. I switched this dosing to 2 in the am and 2 12 hrs. later and still had the same issue. It was easily managed with advil but I try to steer clear of all NSAID's if possible. That being said I can't see running a full bottle of this because of the headache issue. Although if that wasn't an issue for me I can say from the limited run I had it's a solid product.