Melatonin is a neurohormone that governs the sleep-wake cycle. Sustained-release formulations are engineered to mimic the body's natural nocturnal secretion profile, releasing the hormone over several hours to help maintain sleep. By improving sleep quality and duration, it supports critical restorative processes like autophagy, DNA repair, and glymphatic clearance, which are fundamental to healthspan.
Verdict
A valuable tool for improving sleep maintenance, a cornerstone of health.
HEALTHSPAN IMPACT
Moderate
RISK LEVEL
Low
EVIDENCE GRADE
A
MONTHLY COST
$10 - $30
Protocol
- Take 1-5 mg approximately 1-2 hours before desired bedtime to allow for initial absorption.
- This formulation is designed to maintain sleep, not initiate it, by releasing melatonin over 6-8 hours.
- Use the lowest effective dose to minimize potential for morning grogginess or tolerance.
Flags
- Sustained-release is for sleep *maintenance*; immediate-release is for sleep *onset*.
- Can cause next-day grogginess or vivid dreams, especially at higher doses.
- May interact with blood thinners, immunosuppressants, and diabetes medications.
- Avoid in individuals with autoimmune diseases unless cleared by a physician.
- Long-term effects on endogenous melatonin production are not fully understood.