Absolute VO2 Max Booster | Raises Oxygen Flow, Reduces Lactate, Builds Endurance | Triathlete, Cycling, Running Supplements | Beta-Alanine and Adaptogens for VO2 Boost & Lactic Acid (84 capsules)

I have used a similar product for years as part of training, so when I found this product I was excited to try it. And I think it has a better outcome, for me, in terms of performance.However, and this is probably just particular to me, I found that I suffered with extreme lethargy for up to 24 hours afterwards. So for me it gave a higher high, but an unacceptable low afterwards. To the point where I was mentally and physically too tired to work out. Interestingly, if I drank a lot of water afterwards (a pint immediately after training, and every hour thereafter) the lethargy did lift by about 80%.So sadly, this product is not for me, as tempted as I am by the performance aspect.