I will not do it because the eca stack is like an anticoagulant(blood thiner) because of aspirin and caffeine,anavar thins out your blood and physicians advice you to suspend anticoagulants if on anavar,these is why a lot of people get nose bleeds all the time. I take one pill of eca(once in a while) just to increase my energy but i don't do the whole program while on anavar.