RECOVERYMIXED
Glycine
Simple, cheap sleep quality aid at bedtime. Not a knockout.
EFFECTIVE DOSE
3 g, 30–60 min pre-sleep
HOW IT WORKS
Lowers core body temperature via peripheral vasodilation; NMDA co-agonist.
WHAT THE EVIDENCE SUPPORTS
- Small subjective sleep-quality improvement in short trials
WHAT TO LOOK OUT FOR
- Not a replacement for sleep hygiene.
SIDE EFFECTS
- Well tolerated
SOURCES
Reviewed 11/1/2025 · Brawn Supplement Reviewer
Educational content. Not medical advice. Talk to a licensed professional before starting any supplement, especially if you take medications or have a medical condition.