Source comparison
MK-677 for Deep Sleep Optimization: Comparison
MK-677 Ghrelin receptor agonist. Amplifies endogenous GH pulses Increases Stage 4 sleep by 50%, reduces REM latency, improves sleep continuity None. Does not suppress natural GH production Best for sleep architecture optimization; requires consistent timing an
This comparison does not assign a generated winner or score.
- MK-677
- Ghrelin receptor agonist. Amplifies endogenous GH pulses
- Increases Stage 4 sleep by 50%, reduces REM latency, improves sleep continuity
- None. Does not suppress natural GH production
- Best for sleep architecture optimization; requires consistent timing and appetite management
- Melatonin
- Pineal hormone. Regulates circadian rhythm signaling
- Reduces sleep onset latency by 7–10 minutes; minimal effect on deep sleep stages
- Low. May desensitize melatonin receptors with long-term use
- Effective for circadian misalignment (jet lag, shift work); does not deepen sleep architecture
- Magnesium Glycinate
- NMDA receptor antagonist. Modulates GABA activity
- Reduces time to fall asleep; mild anxiolytic effect; no measurable effect on slow-wave sleep
- None
- Useful for anxiety-driven insomnia; does not address sleep architecture deficits
- Benzodiazepines
- GABA-A receptor positive allosteric modulator
- Increases total sleep time but suppresses REM and Stage 4 sleep
- High. Tolerance develops within 2–4 weeks
- Contraindicated for long-term use; impairs restorative sleep quality despite sedation