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ingestible · for hormonal acne

Vitex (Chasteberry)

Reviewed by the Nimbera editorial team · Last updated May 2026

Schellenberg R. (2001) "Treatment for the premenstrual syndrome with agnus castus fruit extract: prospective, randomised, placebo controlled study." BMJ, 322(7279):134-7 (PMID 11159568). N=170 women over 3 menstrual cycles; active treatment showed significantly greater symptom reduction vs placebo, with responder rate of 52% vs 24%. Acne was included among tracked PMS symptoms but was not the primary endpoint.$15-30/month

How to use

Take a standardized Vitex agnus-castus extract (typically 20-40 mg dry extract, or 160-240 mg of a 6:1-12:1 extract) once daily in the morning on an empty stomach or with breakfast. Take consistently every day throughout the entire cycle, not only in the luteal phase. Allow at least 3 consecutive menstrual cycles before judging effectiveness.

How it works

Vitex binds dopamine D2 receptors in the pituitary gland, suppressing prolactin secretion. Lower prolactin allows a more normal LH/FSH ratio, supporting progesterone production in the luteal phase and reducing the estrogen-progesterone imbalance that drives cyclical sebum surges.

Where to buy

Health food stores, compounding pharmacies, and online. Look for standardized extracts (Ze 440 or Femicur formulations have the most clinical data). Brands include Nature's Way, Gaia Herbs, and Vitanica.

Typical cost: $15-30/month

Safety notes

Do not use during pregnancy - Vitex may trigger uterine contractions. Do not use while breastfeeding. Contraindicated with dopamine antagonist medications (antipsychotics such as haloperidol, metoclopramide) as effects may compete. May interact with hormonal contraceptives and hormone replacement therapy - consult your prescriber. Acne is paradoxically listed as both a potential benefit and an occasional adverse event in Vitex trials. Not appropriate for PMDD (more severe premenstrual dysphoric disorder) without medical supervision. Allow 3 months minimum before evaluating - discontinue if acne worsens.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

Schellenberg 2001, BMJ

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.