Sleep Supplements India 2026 — Compared by Evidence

Melatonin is not a sleeping pill. It's a darkness signal — it tells your brain it's night. Strong evidence for sleep onset time, jet lag, and circadian phase shifts (Brzezinski et al., 2005, Sleep Med Rev). No meaningful evidence for total sleep time or deep sleep quality. The 5mg and 10mg tablets dominant in India are roughly 10× the minimum effective dose. Higher doses don't work better; they just linger and cause next-day grogginess.

Magnesium acts as a natural NMDA receptor antagonist — it calms overactive neural firing, which is why deficient people often have trouble sleeping. ICMR estimates over 60% of Indians are magnesium-deficient, making this the most likely supplement to produce results across a large chunk of the population. Abbasi et al. (2012, JRMS) — 500mg magnesium oxide daily improved all sleep parameters in 46 elderly insomnia patients. Glycinate has far better absorption than oxide; 300mg glycinate delivers more usable magnesium.

L-theanine is an amino acid found in green tea. It increases alpha brain wave activity — the relaxed but alert state you get in meditation. It is not sedating. Hidese et al. (2019, Nutrients) found that 200mg daily for 4 weeks improved sleep quality, reduced anxiety, and improved next-day mental alertness in adults with stress. The sleep benefit works by quieting the mental churn that keeps people awake. Best use: racing thoughts at bedtime. Not useful if the problem is early waking or sleep maintenance.

Ashwagandha's sleep benefit comes through cortisol reduction, not direct sedation. If your sleep problem is stress and anxiety-driven — the lying-awake-thinking type — this is likely the right compound. Langade et al. (2019, Medicine) — 150 adults, KSM-66 300mg twice daily for 10 weeks, improved sleep onset, sleep quality, and morning alertness. Effect is slow — expect 4–6 weeks minimum before noticing results. Useless for jet lag or shift work.

GABA is the brain's primary inhibitory neurotransmitter. The problem: GABA taken orally does not cross the blood-brain barrier in meaningful amounts. The GABA in your neurons is synthesised there; you cannot supplement your way to higher brain GABA by swallowing it. Yamatsu et al. (2016) found some sleep onset improvement with 100mg GABA — the mechanism may be gut-brain axis signalling, not direct brain delivery. Very limited evidence. Skip GABA standalone products and look at compounds that actually modulate GABA-A receptors instead (magnesium does this).

Valerian has a mixed evidence base. Some meta-analyses show a modest sleep onset benefit (Leathwood et al.); others find no effect over placebo. It has a traditional role in European herbal medicine and in Ayurvedic formulations (tagara). The more significant concern: case reports of valerian-associated hepatotoxicity at high doses and with prolonged use exist in the literature. Not dangerous at standard doses for short periods, but the evidence doesn't justify it over better-studied alternatives.