Buy Vitex (chasteberry)

Products that match the form and dose used in the studies. Umbral earns a commission on some purchases; the order never changes because of it.

Moderate
20 mg/day of Ze 440 standardised extract, or the labelled dose of BNO 1095. Trials ran three consecutive cycles before assessing response.
Ratings, prices and photos were read from Amazon on Sep 18, 2026. Amazon prices change; the current one is on the product page.

As an Amazon Associate, Umbral earns from qualifying purchases. Product data is provided by Amazon and may change; ratings and prices shown are Amazon’s, not Umbral’s. Recommendations are based on the evidence grade and the form used in trials, never on commission.

Gaia Herbs Vitex Berry 1000 mg, 60 Vegan Capsules
Gaia Herbs Vitex Berry 1000 mg, 60 Vegan Capsules
4.5(4,484)
$19.79

The best-selling and best-reviewed vitex. The trials ran three consecutive cycles before judging response, so give it three months before you decide anything.

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Amazon price on Sep 18, 2026.
NOW Supplements Chaste Berry Vitex Extract 300 mg
NOW Supplements Chaste Berry Vitex Extract 300 mg
4.6(1,189)
$13.46

A standardised extract rather than ground berry. The positive double-blind trials all used standardised extracts — Ze 440 or BNO 1095 — not generic powder.

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Amazon price on Sep 18, 2026.
Nature's Way Vitex Fruit (Chasteberry)
Nature's Way Vitex Fruit (Chasteberry)
4.5(5,636)
$19.68

Five and a half thousand ratings, the most-reviewed here. Vitex works on prolactin, not on the autonomic shift your wearable records — the chart may not move even if the symptoms do.

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Amazon price on Sep 18, 2026.
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What to look for
  • ✓Standardised dry fruit extract — specifically Ze 440 (20 mg/day) or BNO 1095, the two extracts that carry the positive double-blind trials. Generic 'chasteberry powder' has no comparable evidence and no standardisation.
  • ✓20 mg/day of Ze 440 standardised extract, or the labelled dose of BNO 1095. Trials ran three consecutive cycles before assessing response.
  • ✓Third-party tested (USP, NSF, Informed Sport)
What to avoid
  • ✕Proprietary blends that hide the dose per ingredient
  • ✕Unstandardised extracts with no active-compound percentage
Safety notes

    As an Amazon Associate, Umbral earns from qualifying purchases. Product data comes from Amazon and may change; ratings and prices are Amazon's, not Umbral's. Suggestions are based on the science and the form used in studies, never on commission.

    Umbral is a wellness product, not a medical device. It does not diagnose, treat, cure or prevent any disease. Supplement information is educational; talk to a clinician before starting anything, especially if you are pregnant, under 18, managing a condition or taking medication.

    These statements have not been evaluated by the Food and Drug Administration.