Performance · For Muscle Gain
MK-677 (Ibutamoren) for Muscle Gain
Oral GH secretagogue that cranks appetite, muscle preservation, and bone density.
Why MK-677 (Ibutamoren) for muscle gain?
MK-677 signals the pituitary gland to secrete growth hormone. It acts as a potent, orally active growth hormone secretagogue.
Muscle Gain context: Increasing lean mass via GH/IGF-1 axis, satellite-cell activity, or anabolic signaling. MK-677 (Ibutamoren) fits this goal because its category (Performance) and benefit profile align with the underlying mechanism.
Benefits relevant to muscle gain
- Increases muscle mass
Reference dosing by bodyweight
Anchored to the most-cited research dose (10000 mcg @ 75 kg). Reference only.
| Bodyweight band | Reference dose range |
|---|---|
| <60 kg / <132 lb | 6233–8433 mcg |
| 60–75 kg / 132–165 lb | 7650–10350 mcg |
| 75–90 kg / 165–198 lb | 9350–12650 mcg |
| 90–105 kg / 198–231 lb | 11050–14950 mcg |
| >105 kg / >231 lb | 12750–17250 mcg |
Side effects to weigh against muscle gain benefit
- Increased appetite
- Water retention
- Lethargy
- Decreased insulin sensitivity
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Reference
Full bodyweight chart
Profile
MK-677 (Ibutamoren) guide
Also researched for
Educational use only
This calculator is provided for research and educational purposes. Outputs are derived from the values you enter. Always verify your math and consult a licensed physician before acting on any result.