Glycine
Inhibitory neurotransmitter & structural amino acid; 3 g before bed shows evidence for improving sleep quality & reducing daytime fatigue.
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3 g glycine before bed significantly reduced daytime sleepiness, fatigue, & cognitive impairment following 25% sleep restriction; mechanism involves core body temperature reduction via SCN NMDA receptors.
15 g gelatin (rich in glycine & proline, with vitamin C) before intermittent exercise doubled collagen synthesis markers (P1NP) vs. placebo; glycine is the most abundant amino acid in collagen (~33%).
Stacks containing Glycine
Public community stacks that include this ingredient.
PMS Calmer (Low-Stim, Cycle-Friendly)
Cycle-phase support focused on calm & sleep quality without stimulants.
Sleep Stack (Ultra-Gentle)
Improves sleep quality without heavy sedation or melatonin.
Sleep & Recovery Stack
Designed to support sleep quality, parasympathetic activation, & overnight recovery without heavy sedation.
Longevity Mix (Bryan Johnson)
Bryan Johnson's Blueprint Longevity Mix is the core daily powder from his self-quantified anti-aging protocol. It combines NAD+ pathway support (CaAKG), collagen precursors (Glycine, Lysine, Vitamin C), joint protection (Glucosamine, Sodium Hyaluronate), mitochondrial support (Creatine, CoQ10-adjacent), and antioxidant defence (Glutathione, Taurine). Every ingredient is dosed at clinically relevant levels validated through continuous biomarker tracking.
Your personalized stack
Built from your selected goals, constraints, diet, & the supplement evidence library. You can edit doses & timing.
Sleep & Calm Wind-Down
Supports parasympathetic activation before sleep.
Stress-Resilient Training Stack
Supports training consistency under physical & mental stress.
Sleep Onset Support (Low Dose)
Supports sleep onset with minimal next-day grogginess.