- Joined
- Jan 21, 2009
- Messages
- 8
I read that these 2 chems are pretty much the same thing but with different esters. Primo being long and Masteron being short. If I am already taking Primo for contest prep... is there any benefit to adding Masteron to my current program? Or would that be essentially like using Test Enanthate in addition to Test Prop? Thoughts / Comments?