Apigenin

What it is

Apigenin is a flavonoid, a type of plant pigment, found in chamomile, parsley, celery and other foods. It is part of the reason chamomile tea has its calming reputation.

It became popular as a supplement after being promoted in some sleep and wellness circles, usually at 50 mg before bed. Much of the interest rests on lab and animal findings rather than human trials.

How it works

Apigenin is thought to bind weakly to benzodiazepine sites on GABA receptors, and also has anti-inflammatory activity in lab studies. In practice its effects in people are probably mild, and absorption from the gut is poor.

What the evidence says

• Weak Sleep quality
  Direct human trials of isolated apigenin are very scarce; chamomile extract has some small trials with modest effects.
• Weak Relaxation and anxiety
  Studies of chamomile extract show some benefit for mild anxiety, but they do not isolate apigenin.
• Weak Anti-inflammatory activity
  Mostly lab and animal evidence.
• Limited Dietary antioxidant intake
  As part of a diet rich in plants, flavonoids are associated with better health overall, though this is not specific to apigenin.

Evidence ratings are our plain-English summary of how much good human research exists, not a promise of results. How we rate evidence.

Dosage and timing

• A common supplement dose is 50 mg in the evening; this comes from popular use rather than strong clinical evidence.
• Chamomile tea provides far smaller amounts but is a pleasant low-risk routine.
• It is often stacked with magnesium or theanine; these are separate decisions.
• No official upper limit; check current guidance.

Forms and what to look for

• Isolated apigenin capsules (often 50 mg).
• Standardised chamomile extract, which is closer to what has been trialled.
• Chamomile tea as a food option.
• Check the label for the actual apigenin content and source.

What to expect, and when

• Do not expect a sedative effect.
• If it helps at all, it is likely to be a mild relaxing effect.
• Many people notice nothing.

Side effects

• Drowsiness in some people.
• Allergic reactions in people sensitive to the daisy family (ragweed, chrysanthemums, marigolds).
• Stomach upset or nausea.
• Vivid dreams reported anecdotally.

Interactions

• Sedatives, sleeping tablets and alcohol could add to drowsiness.
• Blood thinners such as warfarin; chamomile has been linked to bleeding reports.
• Apigenin may affect liver enzymes that process some medicines.
• May interact with hormone-sensitive treatments, as flavonoids can have weak hormone-like activity.

Who should avoid it

• Pregnancy and breastfeeding, due to limited data.
• Anyone with an allergy to chamomile or the daisy family.
• People on blood thinners or hormone-sensitive conditions without medical advice.
• Do not drive if drowsy.

Risks and safety

• Little human safety data for isolated high-dose apigenin.
• Poor absorption means labels may overstate effective dose.
• Marketing often leans on lab studies that may not apply to people.

Buying well: quality and testing

• Check the milligrams of apigenin and its source.
• Prefer third-party tested brands.
• Be wary of sleep blends with undisclosed doses.
• Avoid exaggerated anti-ageing or anti-cancer claims.

Bottom line

Apigenin is a low-risk, low-evidence add-on. It suits someone who enjoys a wind-down ritual and is happy to experiment, but a regular sleep schedule, light exposure and caffeine timing will matter far more. Persistent sleep problems are worth discussing with a GP.