it was made to replace anadrols, its supposed to be safer, why do people think its only good for endurance, anadrols produce rbc;s and thats all they do, i recovered from liver failure, and my kidneys would not produce epo, so my doc gave me 10.000 units twice a week for 6 weeks, the stuff works for 3 to 6 months, i havnt been training and i put a ral good 20 lbs on and i always feel pumped, i started taking 200 mgs of cyp a week and feel great, im gonna get back in the gym, i think you get alot from it it last up to 6 months, thats awesome, ive had joint pains, but cant say for sure if its epo,