Source comparison
MK-677 for Men Over 40: [Compound] Comparison
Mechanism Ghrelin receptor agonist; stimulates endogenous GH release Bioidentical recombinant GH; bypasses pituitary GHRH analog + GHRP; stimulates pituitary GH secretion MK-677 preserves natural pulsatility; GH provides precise dosing control; peptide blends
This comparison does not assign a generated winner or score.
- Mechanism
- Ghrelin receptor agonist; stimulates endogenous GH release
- Bioidentical recombinant GH; bypasses pituitary
- GHRH analog + GHRP; stimulates pituitary GH secretion
- MK-677 preserves natural pulsatility; GH provides precise dosing control; peptide blends offer middle-ground flexibility
- Dosing
- 10–25mg oral daily
- 2–4 IU subcutaneous daily
- 100–200mcg each, subcutaneous 1–2× daily
- Oral dosing with MK-677 is the most convenient; GH requires daily injections; peptides require reconstitution and timing precision
- GH Elevation
- 60–80% increase from baseline
- Supraphysiological levels (dose-dependent)
- 200–300% pulsatile increase during dosing window
- GH injections produce highest peak levels; peptides produce strongest pulsatile bursts; MK-677 offers sustained moderate elevation
- Cost (Monthly)
- $60–$120 (research-grade)
- $500–$1,200 (pharmaceutical)
- $150–$300 (compounded)
- MK-677 is the most cost-effective for men over 40 seeking long-term use; GH is prohibitively expensive without insurance coverage
- Legal Status
- Research compound (not FDA-approved for human use)
- Schedule III controlled substance
- Prescription-only (compounded)
- All three require careful sourcing; GH carries the strictest legal controls; MK-677 exists in a regulatory gray area
- Side Effects
- Increased appetite, transient water retention, fasting glucose elevation (+5–10 mg/dL)
- Insulin resistance, edema, joint pain, carpal tunnel at high doses
- Injection site reactions, transient cortisol/prolactin elevation
- MK-677 has the mildest side effect profile for healthy men; GH carries higher metabolic risk; peptides require injection compliance