Apigenin
Content by: OpenSupplement Editorial Team | Medical review: pending | Last updated: April 13, 2026
TL;DR
Flavonoid from chamomile that binds GABA receptors for mild sedative effects
Limited human sleep data — mostly extrapolated from chamomile studies
Also blocks CD38 enzyme that depletes cellular NAD+ levels
Well-tolerated at typical doses, some estrogenic concerns at high doses
Cost: $10-15/month for 50-100mg daily
Best for: Sleep onset difficulties, mild anxiety, longevity enthusiasts
What it is
Apigenin is a naturally occurring flavonoid found in chamomile flowers, parsley, celery, and other plants. It's the compound largely responsible for chamomile tea's relaxing effects, binding to benzodiazepine receptors in the brain to produce mild sedation without the dependency risks of pharmaceutical sleep aids.
Beyond sleep, apigenin has gained attention in longevity circles for its ability to inhibit CD38, an enzyme that consumes NAD+ — a crucial cellular energy molecule that declines with age. This dual mechanism makes it appealing for both immediate sleep benefits and potential long-term cellular health, though the longevity claims remain largely theoretical in humans.
What the research says
Mechanism vs. Evidence Gap
Apigenin's sleep effects are well-understood mechanistically. The Viola study [2] demonstrated that apigenin binds to central benzodiazepine receptors with anxiolytic effects, explaining chamomile's traditional sedative use. However, direct human studies on isolated apigenin for sleep are virtually non-existent.
Chamomile as Proxy Evidence
Most sleep claims stem from chamomile research. A small pilot RCT [3] found modest improvements in sleep quality using standardized chamomile extract, but this contained multiple compounds beyond apigenin. The leap from "chamomile helps sleep" to "isolated apigenin helps sleep" isn't scientifically validated, despite the logical mechanistic connection.
Practical Reality
Many users report noticeable sleep onset improvements with 50-100mg taken 30-60 minutes before bed, suggesting the mechanistic promise translates to real-world benefit. However, those seeking evidence-based sleep support might consider melatonin or magnesium first, which have stronger clinical backing. [1]
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Apigenin on Amazon
Safety
Apigenin appears well-tolerated at typical supplemental doses, reflecting its presence in common foods like chamomile tea. The main safety concern emerges from animal studies suggesting potential estrogenic effects at very high doses — though these doses far exceed typical supplement amounts of 50-100mg daily.
Some users report mild grogginess the following morning, particularly when taken too close to bedtime or at higher doses. Unlike pharmaceutical sleep aids, apigenin doesn't appear to cause tolerance or withdrawal, making it relatively safe for regular use.
Interactions
• Warfarin and blood thinners — moderate interaction risk due to CYP enzyme inhibition • Sedative medications (benzodiazepines, sleep aids) — may enhance sedative effects • CYP1A2 substrates — caffeine, some antidepressants may be affected • Estrogen-containing medications — theoretical interaction due to potential estrogenic activity
Dosing
For Sleep Onset 50-100mg taken 30-60 minutes before desired sleep time. Start with 50mg to assess tolerance. Take on an empty stomach for faster onset, though food doesn't significantly impair absorption.
For Longevity/NAD+ Support 25-50mg daily with meals. Lower doses may be sufficient for CD38 inhibition, though optimal dosing remains unstudied.
Form Considerations Most supplements provide apigenin as a powder in capsules. Look for products specifying apigenin content rather than just "chamomile extract" for consistent dosing.
Cost
Apigenin supplements typically cost $10-15 monthly for a 50-100mg daily dose, making it relatively affordable among sleep supplements. Pure apigenin costs more than chamomile tea but less than prescription sleep aids. Generic versions are widely available, though quality varies between manufacturers. Consider the cost-effectiveness compared to chamomile tea (roughly $0.10 per cup) if sleep is your primary goal.
The bottom line
Apigenin occupies an interesting middle ground — compelling mechanism, widespread anecdotal success, but minimal direct human studies. It's likely effective for sleep onset based on receptor binding data and user reports, making it reasonable for those seeking a natural, non-habit-forming sleep aid. However, if you prioritize evidence-based supplementation, melatonin or magnesium have stronger clinical support. Best suited for people who respond well to chamomile tea but want a more concentrated, consistent dose.
References
- Srivastava JK, Shankar E, Gupta S. Chamomile: A herbal medicine of the past with bright future. Mol Med Rep. 2010;3(6):895-901.
- Viola H, Wasowski C, Levi de Stein M, et al. Apigenin, a component of Matricaria recutita flowers, is a central benzodiazepine receptors-ligand with anxiolytic effects. Planta Med. 1995;61(3):213-216.
- Zick SM, Wright BD, Sen A, Arnedt JT. Preliminary examination of the efficacy and safety of a standardized chamomile extract for chronic primary insomnia: a randomized placebo-controlled pilot study. BMC Complement Altern Med. 2011;11:78.
Sources for this page include published meta-analyses, systematic reviews, and NIH dietary supplement fact sheets. All claims reflect the evidence as of early 2026.
This is not medical advice. Consult your healthcare provider before starting any supplement, especially if you take medications.