Chaste tree berry (Vitex Agnus-Castus) and was first recorded as being used by Hippocrates in the 4th century AD.
Chaste tree contains iridoids, flavonoids, progestins, and essential oils. This combination may help control menstrual cycles and ease menstrual pain. It may treat some endocrine problems.
Chaste tree berries have long been fed to horses and ponies to support hormonal challenges, and to older horses that require pituitary support.
It’s most commonly used to treat:
hormonal problems such as "marey behaviour",
Cushings disease, Metabolic syndrome,
Infertility
Nursing difficulties
It is also used as protection against insect bites.
Not recommended for pregnant mares.