Deep Sleep

Why These Combine

Three non-overlapping calming mechanisms — GABA support (magnesium), the benzodiazepine site (apigenin) and alpha-wave activity (L-theanine) — taken together 30–60 min before bed for easier onset without next-day grogginess. The weight of evidence behind the three is uneven, and worth knowing before you buy three bottles. Magnesium has the clearest trial: 46 older adults with insomnia took 500 mg a day for eight weeks and improved on the Insomnia Severity Index, sleep efficiency, sleep-onset latency and serum cortisol against placebo, although total sleep time did not differ (Abbasi 2012) — the 400 mg here is close to that dose. L-theanine has two: 200 mg a day for four weeks improved Pittsburgh Sleep Quality Index scores, including the sleep-latency subscale, in 30 healthy adults (Hidese 2019), and 400 mg a day for six weeks raised actigraphy-measured sleep efficiency in 98 boys with ADHD without changing sleep latency (Lyon 2011). Apigenin is the speculative third. Its binding at the GABA-A benzodiazepine site and its anxiolytic effect come from mouse work (Viola 1995), and the closest human sleep data are for chamomile extract, which contains apigenin among many other compounds: 270 mg twice daily for 28 days in 34 adults with chronic primary insomnia produced no significant difference on any sleep-diary measure (Zick 2011). If stress is what keeps you awake, the Stress Shield stack addresses the daytime side of that; if low mood is part of the picture, Mood & Balance uses the same magnesium with ashwagandha and saffron. Verdict: magnesium and L-theanine are the stack; add apigenin last and on its own, so you can tell whether it does anything for you.

• New to this? Fix sleep hygiene first, then layer this stack in — How to Improve Sleep with Supplements→
• If stress is the sleep driver, see the Stress Shield stack→
• Low mood as well as poor sleep? The Mood & Balance stack shares the magnesium and adds saffron and ashwagandha→

References

1. 1.Abbasi 2012, J Res Med Sci — Magnesium improved insomnia measures in older adults.
2. 2.Viola 1995, Planta Medica — Apigenin binds the GABA-A benzodiazepine site (anxiolytic).
3. 3.Nobre 2008, Asia Pac J Clin Nutr — L-theanine raises alpha-wave activity (calm).
4. 4.Hidese 2019, Nutrients — 30 healthy adults (9 men, 21 women; mean age 48), randomised placebo-controlled crossover: L-theanine 200 mg/day for 4 weeks reduced Pittsburgh Sleep Quality Index scores, with the sleep-latency, sleep-disturbance and sleep-medication subscales improving versus placebo; verbal fluency and executive-function scores also improved.
5. 5.Lyon 2011, Altern Med Rev — 98 boys aged 8–12 with ADHD, randomised double-blind: L-theanine 400 mg/day for 6 weeks gave significantly higher actigraphy sleep percentage and sleep efficiency than placebo; sleep latency was unchanged; well tolerated. (paediatric ADHD population at twice the dose used here)
6. 6.Zick 2011, BMC Complement Altern Med — 34 adults aged 18–65 with chronic primary insomnia, randomised double-blind pilot: standardised chamomile extract 270 mg twice daily for 28 days showed no significant difference from placebo on any sleep-diary measure (total sleep time, efficiency, latency, awakenings, quality); small-to-moderate effect sizes on daytime functioning only. (chamomile extract, not isolated apigenin — the closest human sleep data available)