Agnus Castus

Also Known As:

Chaste Tree


  • Premenstrual Syndrome (PMS)
  • Period Pain
  • Teenage Acne


This herb has a long tradition of use as a general balancer for the female hormones. Despite it's common name, Chaste Tree, Agnus Castus is actually a shrub found in the Mediterranean. The fruit of the plant is used in phytotherapy and gives off a pleasant peppermint-like smell.

How It Works

Agnus Castus acts on the pituitary gland to increase the secretion of lutenising hormone, which leads to an increase in the production of progesterone during the second half of the menstrual cycle. It has also been reported to inhibit prolactin.
Both these actions are thought to be important in PMS, particularly as many who suffer with the problem have a greater sensitivity to prolactin. Agnus castus has also been found to be beneficial in the treatment of acne in both men and women.

Additional suggestion:

Do not take if using oral contraceptives or HRT.