Ibutamoren vs L-692,429
Head-to-head comparison of Ibutamoren (Ibutamoren mesylate (MK-677)) and L-692,429 (L-692,429) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Ibutamoren | L-692,429 |
|---|---|---|
| Category | Growth Hormone | Growth Hormone |
| Full Name | Ibutamoren mesylate (MK-677) | L-692,429 |
| Molecular Weight | N/A | N/A |
| Half-Life | about 24 hours | unknown / study-dependent |
| Amino Acids | N/A | N/A |
| Typical Dose | 10-25 mg/day | 0.03-0.1 mg/kg |
| Route | Oral | Oral |
| Purity | ≥98% | ≥98% |
| Studies Count | 180 | 30 |
| Research Status | Clinical | Pre-clinical |
Ibutamoren Benefits
- ✓raises GH/IGF-1
- ✓increases appetite
- ✓supports lean mass retention
- ✓oral non-peptide secretagogue
L-692,429 Benefits
- ✓potent GHSR agonism
- ✓oral bioactivity in models
- ✓validates ghrelin pathway
- ✓useful research probe
Ibutamoren Dosing
10-25 mg orally once daily|take consistently at the same time each day|monitor fasting glucose and edema in longer studies
L-692,429 Dosing
0.03-0.1 mg/kg in early studies|single oral or short-course research dosing|serial GH sampling recommended
Ibutamoren Side Effects
- ⚠increased appetite
- ⚠water retention/edema
- ⚠somnolence or lethargy
L-692,429 Side Effects
- ⚠increased appetite
- ⚠glucose intolerance
- ⚠transient prolactin changes
Research Overview
Ibutamoren
Clinical studies show oral ibutamoren reliably elevates GH and IGF-1 over 24 hours with once-daily dosing. Body composition and appetite effects vary by population, and development has been limited by metabolic side effects.
L-692,429
L-692,429 was important in early GH secretagogue research because it showed that nonpeptide molecules could trigger robust GH release. It remains a classic tool compound for studying receptor-mediated GH pulsatility and appetite signaling.
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