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The Mechanism Truth About MK-677 vs Prescription HGH
Here's the honest answer: calling MK-677 'oral HGH' is biochemically incorrect and leads to dangerous dosing assumptions. MK-677 does not contain growth hormone. It contains a ghrelin mimetic that your pituitary responds to by releasing its own GH. Prescriptio
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- Here's the honest answer: calling MK-677 'oral HGH' is biochemically incorrect and leads to dangerous dosing assumptions. MK-677 does not contain growth hormone. It contains a ghrelin mimetic that your pituitary responds to by releasing its own GH. Prescription HGH is somatropin. The actual hormone, identical to what your pituitary produces, delivered exogenously. The distinction is not semantic. It determines whether your natural GH axis stays active (MK-677) or gets suppressed (HGH), whether you can dose orally or need injections, and whether the legal pathway is research compound procurement or Schedule III controlled substance prescribing.
- The proliferation of 'oral HGH' marketing has blurred this line deliberately. No FDA-approved oral HGH formulation exists for systemic GH elevation. Somatropin is a 191-amino-acid protein that gets digested in the GI tract before reaching circulation. MK-677 works because it is not growth hormone; it is a small-molecule drug that survives first-pass metabolism and crosses into circulation to activate ghrelin receptors. The two compounds achieve overlapping outcomes (elevated IGF-1) through entirely separate mechanisms, with non-overlapping risk profiles and regulatory classifications. Substituting one for the other based on convenience or cost without understanding the mechanistic difference is how adverse events happen.