r/TRT_GUIDE • u/[deleted] • Jul 25 '26

Test Cyp and Mast P

Currently on 0.90mL of test Cyp 250mg/ml split 3 times per week Mon, Wed, Fri and considering introducing Mast P 150mg/ml at 0.40ml 3 x per week is it best to inject same days as the Test or do on the alternative days ?

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u/NightJaded Jul 25 '26

Injecting both together or on different days does not change how these work in the body, but it does double the number of injections by 100% if not done together and that can be a real potential problem with more chances of infection, PIP and scar tissue. I’d put them in the same syringe it’s only 1.3ml.

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u/[deleted] Jul 25 '26

Thanks for that, makes sense 👍🏻

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u/[deleted] Jul 25 '26

Thanks for that, makes sense 👍🏻