MK-677 Alternatives

A selective growth hormone secretagogue that stimulates GH release without significantly affecting cortisol or prolactin. Considered one of the safest GHRPs.

A synthetic analog of growth hormone-releasing hormone (GHRH) that stimulates GH release from the pituitary. Often combined with a GHRP like Ipamorelin for synergistic effects.

An FDA-approved GHRH analog used to reduce excess abdominal fat in HIV-infected patients with lipodystrophy. One of the few peptides with FDA approval.

One of the first synthetic GH secretagogues developed. Strongly stimulates GH release and significantly increases appetite through ghrelin receptor activation.

A synthetic hexapeptide that potently stimulates GH release. More potent than GHRP-6 with less appetite stimulation, but still elevates cortisol and prolactin.

A truncated analog of natural GHRH containing the first 29 amino acids. Previously FDA-approved for pediatric GH deficiency, now used off-label for adult hormone optimization.

A synthetic hexapeptide GH secretagogue with the strongest GH-releasing effect among GHRPs. Also has notable cardioprotective properties independent of GH release.

A long-acting GHRH analog with Drug Affinity Complex for extended half-life. Provides sustained GH elevation for days with single injection.