Evidence-Based Stack
Sleep Stack
Four evidence-backed supplements that improve sleep quality without sedating you the next morning.
The goal isn't to knock yourself out — it's to let your body do what it already knows how to do. This stack combines a calming magnesium form (glycinate) that also doubles as a laxative-free GI-friendly mineral source, an acute calming amino (L-theanine) that blunts pre-sleep anxiety, a deep-sleep enhancer (glycine) that specifically increases slow-wave sleep duration, and a low-dose hormonal signaler (melatonin) that shifts circadian phase when your problem is timing rather than quality. Skipped: valerian (inconsistent evidence), diphenhydramine (sedating but disrupts sleep architecture), and mega-dose melatonin (paradoxical disruption).
What's in it
Parasympathetic activator — calms the nervous system, relaxes muscles, supports deep sleep maintenance.
Dose: 300-400 mg elemental, 30-60 minutes before bed
Full Magnesium Glycinate profile →Acute anxiolytic — raises alpha-wave activity, reduces pre-sleep rumination without drowsiness.
Dose: 200 mg, 30 minutes before bed
Full L-Theanine profile →Deep-sleep enhancer — RCTs show subjective sleep quality improvement and next-day fatigue reduction.
Dose: 3 g as powder in water, 60 minutes before bed
Full Glycine profile →Circadian signaler — useful when the problem is falling asleep (not maintaining it). Low-dose only.
Dose: 0.3-1 mg, 30-60 minutes before bed. Higher doses disrupt sleep architecture paradoxically.
Full Melatonin profile →How to take it
Take the core pair (magnesium + L-theanine) nightly. Add glycine for 2-3 weeks to gauge whether it noticeably deepens sleep for you — responders report clearer mornings. Reserve melatonin for timing issues (jet lag, shift work, genuine can't-fall-asleep). Don't stack melatonin nightly if you're sleeping fine — the body becomes less responsive to its own endogenous signal.
Cautions
Melatonin can interact with blood pressure and anticoagulant medications — check before long-term daily use. High-dose magnesium competes for absorption with calcium and thyroid medications; separate by 2-4 hours. Glycine is generally very safe. L-theanine has no documented drug interactions at supplement doses.
Interactions between stack members
These are interactions Formulate has catalogued between the substances above. Review before combining if any apply.
Next steps
Educational only. Stack recommendations are not medical advice. Discuss any new supplement protocol with your clinician, especially if you take prescription medication or have a chronic condition.