Hormone Support

Vitex (Chasteberry)

Also known as: Chaste tree berry, Vitex agnus-castus, Chasteberry, Monk's pepper

Evidence

Well-researched herb for women's hormonal balance, PMS, and cycle regulation.

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

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Primary uses

PMS symptoms
Cycle regulation
Progesterone support
PCOS (some)

How it works

Acts on pituitary to support progesterone
Dopaminergic effects
Reduces prolactin
Regulates LH/FSH ratio

Dosage

Typical range: 20-40mg standardized extract or 160-240mg dried berry equivalent
Timing: Morning, before breakfast
With food: No, empty stomach preferred
Duration: 3-6 months for full effect
Special populations: Women with PMS, irregular cycles, luteal phase issues

Forms

Standardized extract
Tincture
Dried berry

Safety

Common side effects

Headache
GI upset
Acne (initially)
Cycle changes

Contraindications

Pregnancy
Hormone-sensitive cancers
IVF/assisted reproduction

Evidence notes

Strong evidence for PMS and cycle regulation

Grade A: Multiple well-designed human trials support the main claims.

Related in Hormone Support

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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.