Taurine is depleted form the liver at 3-5g/day by clenbuterol. We get some taurine from the elevated protein contents of our diets as athletes, but sometimes it still falls short. Taurine is responsible for calming exitatory pathways that can cause heart palpitations, muscle spasms, headaches and some cramps. If you experience any of the above, give taurine a shot. It's cheap and available at most supp shops.
MAYO