Herbal Extract

Chaste Berry Extract

Also known as: Vitex agnus castus, Vitex, chasteberry, monk's pepper

Evidence

Chaste berry (Vitex agnus castus) is a traditional herbal extract from the fruit used to support hormonal balance and menstrual cycle regulation in women. Clinical evidence supports benefit for premenstrual symptoms (PMS) and breast tenderness.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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The highest-scored Chaste Berry Extract product in our catalog (80/100). Track dose and overlaps in the app.

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Every Chaste Berry Extract product we have scored

#	Product	Score	Per serving
1	Bluebonnet Nutrition VITEX BERRY EXTRACT	80 A-	$0.36
2	NOW Foods Female Balance	77 B+	$0.18

Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.

Common questions

How much Chaste Berry Extract should I take?

The typical range is 20-40 mg daily (standardized extract) or 400-500 mg fruit powder daily. Effects typically observed after 3-6 cycles of menstruation; requires consistent use over weeks/months

When should I take Chaste Berry Extract?

Typically once daily in the morning; consistent daily use is key. Can be taken with or without food; morning dosing preferred.

Which form of Chaste Berry Extract is best?

Extract (standardized). Other forms in the catalog: Fruit powder, Liquid extract, Standardized extract (agnusides).

Is Chaste Berry Extract safe?

Commonly reported: Mild gastrointestinal upset, Headache (rare), Nausea (rare), Rash/skin reactions (rare).

Which Chaste Berry Extract supplement scores highest?

Bluebonnet Nutrition VITEX BERRY EXTRACT, at 80/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.

Primary uses

Premenstrual syndrome (PMS) support
Menstrual cycle regulation
Breast tenderness/mastalgia support
Hormonal balance support

How it works

Dopamine agonist activity
Pituitary hormone modulation (LH/FSH)
Progesterone support
Prolactin regulation

Dosage

Typical range: 20-40 mg daily (standardized extract) or 400-500 mg fruit powder daily
Timing: Typically once daily in the morning; consistent daily use is key
With food: Can be taken with or without food; morning dosing preferred
Duration: Effects typically observed after 3-6 cycles of menstruation; requires consistent use over weeks/months
Special populations: Avoid in pregnancy; controversial in nursing; avoid with estrogen-dependent conditions

Forms

Extract (standardized)· 70/100
Fruit powder· 70/100
Liquid extract· 70/100
Standardized extract (agnusides)· 70/100

Safety

Common side effects

Mild gastrointestinal upset
Headache (rare)
Nausea (rare)
Rash/skin reactions (rare)

Contraindications

Pregnancy (potential uterotonic effects)
Nursing (effects on milk supply unclear; use cautiously)
Estrogen-dependent cancers (theoretical concern)
Pituitary tumors or disorders

Products containing Chaste Berry Extract

Top-scoring supplements in our catalog that list Chaste Berry Extract on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Bluebonnet Nutrition

NOW Foods

Evidence notes

Multiple RCTs demonstrate efficacy for PMS symptoms, particularly breast pain and mood changes. Evidence is good for short-term use (3-6 months); long-term safety data is more limited. Considered one of the better-evidenced herbal options for women's hormonal support.

Grade B: Some human trials support key claims; further confirmation needed.

Related in Herbal Extract

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.