Falling Asleep Faster
About this protocol
Where to start
Start with magnesium glycinate 1-2 hours before bed. Foundation of any sleep stack.
Add L-theanine 30-60 minutes before bed if racing thoughts or wind-down anxiety is the issue.
Add low-dose melatonin (0.3-0.5 mg) 30-60 minutes before bed. The low dose is more effective for sleep onset than the 5-10 mg most over-the-counter products contain.
Add glycine 30 minutes before bed if you''re physically warm and can''t cool down to sleep.
Don''t stack all four immediately — start with one or two and add layers as needed.
4 nutrients
Start here
Strongest evidence — the foundation of the stack.
Magnesium Glycinate
200-400 mg elemental, 1-2 hours before bedMagnesium is an NMDA receptor antagonist and GABA-A receptor agonist, promoting nervous system relaxation. Trial evidence in adults with insomnia supports improved sleep efficiency and reduced sleep onset latency.[1, 2]
L-Theanine
100-200 mg, 30-60 minutes before bedL-theanine increases alpha-wave activity and reduces wind-down anxiety. Non-sedating but produces a calm-but-alert state that facilitates sleep onset.[3, 4]
Add if needed
Add these only if the foundation isn't enough.
Melatonin (Low-Dose)
0.3-0.5 mg, 30-60 minutes before bedLow-dose melatonin signals circadian alignment without the next-day grogginess of high-dose. Counterintuitively more effective for sleep onset than 3-10 mg products. Most US over-the-counter products are dramatically over-dosed.[5, 6, 7]
Experimental
Emerging evidence — try last, only if curious.
Glycine
3 g, 30-60 minutes before bedGlycine lowers core body temperature via peripheral vasodilation — a key sleep-onset signal. Small trials show reduced sleep latency and improved subjective sleep quality.[8, 9]
Warnings
Lifestyle improvements
Consistent sleep timing
Bed and wake at the same time daily — including weekends. The single highest-leverage sleep intervention.
Cool, dark bedroom
18-20°C / 65-68°F. Blackout curtains. No electronics emitting light.
Stop caffeine by noon
Caffeine half-life is 5-6 hours. The 2 PM coffee is still half-active at 7 PM.
Wind-down routine
30-60 min before bed: dim lights, no screens, optionally a warm shower (your temperature rebound mimics natural sleep onset).
Skip alcohol within 3 hours of bed
Alcohol speeds onset but fragments architecture in the second half of the night.
References
- Magnesium — supplement research overviewExamine.com link
- Abbasi B, et al. The effect of magnesium supplementation on primary insomnia in elderly. J Res Med Sci. 2012;17(12):1161-1169.PubMed link
- L-Theanine — supplement research overviewExamine.com link
- Hidese S, et al. Effects of L-Theanine administration on stress-related symptoms and cognitive functions in healthy adults. Nutrients. 2019;11(10):2362.PubMed link
- Melatonin — supplement research overviewExamine.com link
- Brzezinski A, et al. Effects of exogenous melatonin on sleep: a meta-analysis. Sleep Med Rev. 2005;9(1):41-50.PubMed link
- Burgess HJ, et al. Human phase response curves to three days of daily melatonin: 0.5 mg versus 3.0 mg. J Clin Endocrinol Metab. 2010;95(7):3325-3331.PubMed link
- Glycine — supplement research overviewExamine.com link
- Yamadera W, et al. Glycine ingestion improves subjective sleep quality in human volunteers. Sleep and Biological Rhythms. 2007;5(2):126-131.Sleep Biol Rhythms link
Related protocols
Other sleep protocols and protocols sharing ingredients with this one.
Better Sleep
sleep
Magnesium, glycine, L-theanine, and apigenin work through complementary mechanisms (GABA modulation, NMDA antagonism, core body temperature regulation) to support faster sleep onset and deeper sleep. Evidence ranges from moderate (magnesium, glycine) to emerging (apigenin). This is a foundational sleep stack — not a substitute for sleep hygiene basics.
Staying Asleep (Wake-Ups)
sleep
Mid-night waking (especially the 2-4 AM "wide awake" pattern) is usually driven by elevated cortisol, fragmented deep sleep, or blood-sugar dips. This stack targets sleep MAINTENANCE rather than onset — phosphatidylserine and ashwagandha to blunt evening cortisol, magnesium and glycine for deeper, less fragmented sleep architecture, and L-theanine to help you fall back asleep if you do wake. Use this for "I fall asleep fine but wake at 3 AM and can''t go back" patterns. For sleep-onset issues, see Falling Asleep Faster.
Deep Sleep & Recovery
sleep
Slow-wave (deep) sleep is when growth hormone peaks, memory consolidates, and tissue recovery accelerates. Some people sleep 8 hours but get insufficient deep sleep — often visible in poor next-day recovery, brain fog, and slow gains from training. This stack targets deep sleep architecture specifically: apigenin and magnesium L-threonate (crosses blood-brain barrier better than other forms), glycine for slow-wave enhancement, L-theanine for alpha-wave priming, and zinc for testosterone-mediated sleep architecture support.
Shift Worker / Night Owl
sleep
Shift workers and natural night-owls face a fundamental conflict: their work schedule misaligns with their circadian biology. Long-term shift work is associated with elevated cardiovascular, metabolic, and cancer risk. This stack supports circadian phase-shifting and sleep quality when sleeping during atypical hours: timed melatonin to signal "night" to the brain when sleeping in daylight, magnesium glycinate for nervous system relaxation, L-theanine for wind-down regardless of clock time, and ashwagandha for the chronic cortisol stress shift work imposes.
Eastbound Jet Lag (5+ zones)
jet lag· 3 shared ingredients
Eastbound travel is the harder direction because your body is being asked to fall asleep earlier than its current circadian phase wants. The internal clock shifts about 1 hour per day naturally — so a 5-zone flight east takes about 5 days to fully reset on its own. The goal of this protocol is to compress that to 2-3 days by combining a phase-advancing melatonin dose with sleep-supportive nutrients. The melatonin dose is deliberately low (0.3 mg). Higher over-the-counter doses (3-10 mg) are LESS effective for phase-shifting than the low dose, and more likely to cause next-day grogginess. The mechanism is hormonal, not sedative — you want the smallest dose that registers as a signal, not the largest dose that knocks you out. This is a 5-day protocol — start the night you arrive at your destination.
Westbound Jet Lag
jet lag· 3 shared ingredients
Westbound travel is the easier direction for circadian recovery — your body is being asked to STAY UP later than its current phase wants, which aligns with the natural human tendency to drift later (the internal clock has a natural period slightly longer than 24 hours). Most people adapt to westbound travel in roughly half the time of equivalent eastbound jet lag. This protocol uses melatonin timed for PHASE DELAY (staying up later) and supports the difficult parts: fighting drowsiness in the destination evening when your body wants to sleep, and falling asleep later than your home schedule once you''re ready. For eastbound travel (the harder direction), see Eastbound Jet Lag (5+ zones) — different protocol with different melatonin timing.
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Coming to App StoreDisclaimer: These statements have not been evaluated by the FDA. This protocol is educational, not a substitute for personalized medical advice. Talk to your doctor before starting any new supplement regimen — especially if you're pregnant, breastfeeding, on medications, or managing a chronic condition. Last updated 5/20/2026.