Chaste Tree

“Chaste Tree”



“Vitex will always enable what is appropriate to occur” – David Hoffman

Botanical Name: Vitex agnus-castus

Common name: Chaste Tree, Monk’s pepper

Family: Lamiaceae

Parts Used: Fruit

Active Constituents: 

  • Flavonoid
  • Alkaloids
  • Iridoids
  • Volatile oil (Blumenthal et al 2000 p63)


  • Prolactin inhibitor
  • Dopaminergic agonist, Progesterogenic
  • Galactogogue
  • Hypothalamic-pituitary-ovarian (HPO) axis regulator
  • Ovulation stimulant / tonic
  • Anaphrodisiac (traditionally)


  • Premenstrual syndrome
  • Mastalgia
  • Fluid retention
  • Progesterone deficiency
  • Corpus luteal insufficiency
  • Latent hyperprolactinemia
  • Cystic hyperplasia of the endometrium
  • Secondary amenorrhoea
  • Insufficient lactation
  • Metrorrhagia (from functional causes), menorrhagia, polymenorrhoea,
  • Oligomenorrhoea
  • Conditions with raised prolactin secretion (e.g, breast cysts, fibrocystic breast disease, BPH)
  • Withdrawal from HRT
  • Fibroids
  • Endometriosis
  • Follicular ovarian cysts
  • Infertility resulting from decreased progesterone levels
  • Acne
  • Galactagogue
  • Emmenagogue
  • Impotence, sexual melancholia, sexual irritability with nervousness
  • Gynaecological problems and insufficient lactation

Contraindications: None Known


  • Should be used cautiously during pregnancy and only in the early stages for treating insufficient corpus luteal function
  • Chase tree is best not taken in conjunction with progesterone drugs, contraceptive pill, or HRT.
  • Chaste Tree may aggravate spasmodic dysmenorrhoea not associated with PMS

May interact antagonistically with dopamine – receptor antagonists


1.0-2.5ml of 1:2 LE per day

6-18ml of 1:2 LE per week

The most common way to take Vitex is 1-2mL in water upon waking in the morning


Therapeutic Effect of Vitex Agnus Castus in PMS

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