Source comparison
MK-677 Sleep Quality Results Timeline: Dosage and Timing Comparison
12.5mg nightly (before bed) Neutral. No sedation 20-30% above baseline Moderate improvement. 15-20% quality score increase Low. Mild appetite stimulation only Best for first-time users prioritising sleep without GH-related sides 25mg nightly (before bed) 40-50
This comparison does not assign a generated winner or score.
- 12.5mg nightly (before bed)
- Neutral. No sedation
- 20-30% above baseline
- Moderate improvement. 15-20% quality score increase
- Low. Mild appetite stimulation only
- Best for first-time users prioritising sleep without GH-related sides
- 25mg nightly (before bed)
- 40-50% above baseline
- Strong improvement. 20-30% quality score increase
- Moderate. Appetite stimulation, potential water retention, transient blood glucose elevation
- Clinical trial standard. Maximal sleep benefit with manageable sides
- 12.5mg morning dosing
- No direct sleep impact
- 10-15% above baseline (diminished)
- Minimal. GH pulse mistimed relative to natural circadian rhythm
- Low. Daytime lethargy in some users
- Suboptimal for sleep. Morning GH pulse doesn't align with nocturnal architecture
- 25mg split dose (AM + PM)
- Neutral
- 25-35% above baseline
- Moderate. 15-25% quality score increase
- High. Extended appetite stimulation, more pronounced glucose and insulin effects
- Not recommended. Split dosing dilutes nocturnal GH pulse without added sleep benefit
- Morning dosing misses the point entirely. Growth hormone's primary sleep-enhancing effect occurs when it amplifies the natural nocturnal pulse. Dosing at 8am elevates GH mid-morning, which does nothing for sleep architecture. The clinical trials used bedtime dosing for a reason.