Melatonin Hangover: Reduce Next-day Grogginess Safely
- Melatonin can cause next‑day grogginess, but evidence and trial results are mixed and product quality varies [1][3].
- Formulation and half‑life determine melatonin blood levels, so sustained‑release can cause morning grogginess [6].
- Immediate-release, lower-dose, and properly timed melatonin reduce next-day grogginess [6][7][8]
- Next-day melatonin grogginess usually stems from modifiable product, behavioral, and biological factors [3].
- Melatonin helps most for circadian misalignment and jet lag, with modest average benefits, so personalize use [9][4].
- Evidence for melatonin is limited by small heterogeneous trials and variable OTC product quality [4][3][10]










