BTW, here is what I currently take Pre/Post workout:
Pre:
100 mg caffeine (or sometimes more, it depends)
25 mg sildenafil (enhanced "pump" and blood flow, easier breathing/better oxygenation, lowers BP peaks on heavy sets)
10 g BCAAs
1,5 g HMB
1,5 g of glucosamine sulfate
15 g of hydrolyzed...