Anyone knows the tablets that improves the stamina of an athletes?

Answer 1

if you're looking for a 'wonder drug', there is no such thing. only endurance traning can improve your stamina.

but what really helps me on long distance runs is carbo gels.

Answer 2

I heard about something that people can use, some drug or something that increases red blood cell count in people, i guess that would do it... BUT i heard it's illegal in the U.S. for non-medical uses or something... besides what good is improving your stamina if your not actually doing 100% yourself? Doesn't that defeat the purpose of working hard? (Rhetorical Question)