ACE-031 & Myostatin Inhibitors

50ShadesGreyMarket

GLP-1 Enthusiast
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Aug 17, 2025
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I haven’t seen any posts related to Myostatin inhibitors on here. I assume most folks who care about muscle hypertrophy are on HMB or something like that. The trials for Trevagrumab and Garetosmab are in Phase 2b which is usually the point where we start seeing lyophilized vials pop up on the black and then grey market.

Anybody know which door we gotta knock on around here? Considering we have sources for oils, I would assume a peptide that blocks Activin A and ActRII would be extremely popular.
 
Both Trevagrumab and Garetosmab are monoclonal antibodies, bit harder to make than peptides. I have not seen any antibody based therapies available from anywhere apart from the pharmaceutical companies. I have seen myostatin - GDF-8 for sale but I am not sure what the market is for a muscle growth inhibitor.
 
Both Trevagrumab and Garetosmab are monoclonal antibodies, bit harder to make than peptides. I have not seen any antibody based therapies available from anywhere apart from the pharmaceutical companies. I have seen myostatin - GDF-8 for sale but I am not sure what the market is for a muscle growth inhibitor.
ACE-031 does the opposite of inhibiting muscle growth, hence why bodybuilders are taking it with GLP’s. It also helps to gain muscle without the side effects of SARMS and various PED’s.

I’m aware Trevagrumab and Garetosmab are pharmaceuticals, they’re probably not going to be released for 2-3 more years at the earliest and mostly likely for muscular dystrophy and related disorders.

I’m positive ACE-031 is available, I just know how expensive it is and was curious if anybody has found a good source that’s reasonably priced.
 
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