Research & Educational Use Only. Not medical advice. Consult a healthcare professional before beginning any protocol.
Oral GH SecretagogueEvidence Grade: A (Human Clinical Trials)
MK-677 (Ibutamoren) Protocol Guide
MK-677 (Ibutamoren) is an orally active growth hormone secretagogue that mimics ghrelin to stimulate sustained GH and IGF-1 elevation over 24 hours per dose. Unlike injectable GHRPs, MK-677 requires no reconstitution or injection. This protocol covers oral dosing at 10-25mg daily before bed, the critical importance of blood glucose monitoring, appetite and water retention management, expected timelines, and cycling recommendations.
Protocol Overview
- Compound
- MK-677 (Ibutamoren Mesylate)
- Category
- Oral GH Secretagogue (Ghrelin Mimetic)
- Mechanism
- Orally active ghrelin mimetic that binds GHS receptors for sustained 24-hour GH release and IGF-1 elevation
- Molecular Weight
- 624.77 Da
- Half-Life
- ~24 hours
- Form
- 25mg capsules or liquid (oral)
- Route
- Oral
- Frequency
- Once daily
- Cycle Length
- 8-16 weeks
Dosing Protocol
| Protocol | Weeks | Dose | Timing | Route |
|---|---|---|---|---|
| Standard | 1-12+ | 25 mg | Before bed | Oral |
| Conservative | 1-8 | 10-15 mg | Before bed | Oral |
| Low-dose Long-term | 1-24 | 10 mg | Before bed | Oral |
Key: No reconstitution needed. Take before bed to align with natural GH release and minimize waking appetite. Can take with or without food.
Administration
How to Take
- Oral capsule or measured liquid
- No injection required
- Swallow with water before bed
Timing & Storage
- Time: Before bed (preferred)
- Consistency: Same time daily
- Storage: Room temperature, away from light
Expected Timeline
Week 1-2
Significant appetite increase. Improved sleep depth. Water retention and bloating. Vivid dreams.
Week 3-4
Appetite normalizes somewhat. Skin quality improving. IGF-1 rising. Water retention stabilizes.
Week 5-8
Body composition changes. Fat loss with proper diet. Hair and nail growth. IGF-1 near peak.
Week 9-12
Sustained GH/IGF-1 elevation. Anti-aging benefits. Joint comfort. Monitor blood glucose closely.
Week 12+
Extended use at 10mg possible with metabolic monitoring. Consider cycling 8 on / 4 off.
Side Effects & Monitoring
Common
- Increased appetite (significant)
- Water retention / bloating
- Vivid dreams / drowsiness
- Numbness/tingling in hands
- Elevated fasting blood glucose
Serious
- Insulin resistance (prolonged use)
- Significant edema
- Joint pain from fluid shifts
- Elevated prolactin (uncommon)
Critical: Monitor fasting blood glucose regularly. MK-677 can cause insulin resistance. Consider berberine or chromium for glucose management.
Stacking
Compatible
- CJC-1295/Ipamorelin: Alternate days
- BPC-157: Recovery support
- Berberine: Blood glucose management
- Cardarine: Metabolic offset
Notes
- Monitor glucose closely with any stack
- Avoid other GH secretagogues on same days
- High-protein, moderate-carb diet recommended
Blood Work (Critical)
| Panel | Markers | Timing |
|---|---|---|
| Metabolic (Priority) | Fasting glucose, HbA1c, fasting insulin, HOMA-IR | Baseline, Week 4, 8, 12 |
| GH Axis | IGF-1 | Baseline, Week 4, 8 |
| Hormonal | Prolactin, cortisol | Baseline, Week 8 |
| Basic | CBC, CMP, lipids | Baseline, Week 8 |
📖 Encyclopedia Article
MK-677 (Ibutamoren) — Complete Research Guide
Mechanism of action, clinical evidence, pharmacokinetics, regulatory status & references
Read Article →
Free Functional Assessment
AI-powered root cause analysis & care plan
Start Free
Paid partnership · Learn more