vitexagnus castus (Chaste Tree, Chaste Berry, Vitex, Monk's Pepper, Agnus Castus, Gattlier, Indian)

  • Pharmacy Author:
    Omudhome Ogbru, PharmD

    Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.

  • Medical and Pharmacy Editor: Jerry R. Balentine, DO, FACEP
    Jerry R. Balentine, DO, FACEP

    Jerry R. Balentine, DO, FACEP

    Dr. Balentine received his undergraduate degree from McDaniel College in Westminster, Maryland. He attended medical school at the Philadelphia College of Osteopathic Medicine graduating in1983. He completed his internship at St. Joseph's Hospital in Philadelphia and his Emergency Medicine residency at Lincoln Medical and Mental Health Center in the Bronx, where he served as chief resident.

What is the dosage for chaste tree (Vitex agnus-castus)-oral?

  • Premenstrual syndrome (PMS): Take 4-20mg by mouth per day.
  • Premenstrual dysphoric disorder (PMDD): Take 20-40mg by mouth per day.
  • Crude herb extract: Take 20-240mg by mouth per day, divided in 2 to 3 doses.
  • Fluid extract: Take up to 40 drops by mouth per day.
  • Dried fruit extract: Take 1.6-3ml by mouth up to two times a day.
  • Tincture: Take 35-45 drops by mouth up to three times a day.

The maximum daily dose is 1800 mg per day.

Which drugs or supplements interact with chaste tree (Vitex agnus-castus)-oral?

Chaste tree berry should be avoided in women taking birth control or any other hormonal medications because chaste tree also affects hormone levels.

Chaste tree should be used with caution in certain antipsychotic or anti-Parkinson's medications because chaste tree may affect dopamine levels in brain, reducing the effect of antipsychotic or anti-Parkinson's medications.

Medically Reviewed by a Doctor on 10/16/2015
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