Triathlete training help

Hi
Any advice on what steroids I can research to assist stamina and strength for triathlete training? Obviously the main aim would be not to build mass.

thanks

Age?
Weight?
Height?
BF%

Hi

Age : 33
Height: 6ft
Weight: 82kg
B/F: unsure but lean to medium build athletic.

Thanks

EQ for stamina .... there are some others like var but the pump is tooo much then again i get a pretty good pump off everything