Ibutamoren MK677

Ibutamoren (MK677) is a selective agonist of the ghrelin receptor and growth hormone secretagogue, often miscategorized as a SARM (selective androgen receptor modulator). Many of those in the fitness industry have chosen to roll with this compound vs. using growth hormone releasing peptides (GHRP’s) or human growth hormone due to cost and to avoid injecting themselves.

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