Mast Propionate 100 - Adelphi Research

Drostanolone Propionate, often branded as Masteron, was originally synthesized in the 1950s and popularized for medical use by Syntex Laboratories. Initially used to treat breast cancer, its anti-estrogenic effects soon attracted bodybuilders, as it helps achieve a defined, “dry” look by blocking estrogen. This effect, combined with its ability to enhance muscle hardness without water retention, made it a staple for competition prep cycles, especially when stacked with testosterone​.

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For detailed information about Mast Propionate 100 by Adelphi Research, consult with your doctor or healthcare professional.