Agnus-castus is taken by mouth for menstrual cycle irregularities, premenstrual syndrome (PMS), a more severe form of PMS called premenstrual dysphoric disorder (PMDD), and symptoms of menopause. It is also used for treating "lumpy" (fibrocystic) breasts, female infertility, preventing miscarriage in women with low levels of a hormone called progesterone, controlling bleeding and helping the body force out the placenta after childbirth, and increasing breast milk.

Vitex agnus-castus is also taken by mouth to increase the flow of urine in men, for treating benign prostatic hyperplasia (BPH), and for reducing sexual desire. Historians say that monks chewed chaste tree parts to make it easier to maintain their celibacy.

Some people also take vitex agnus-castus by mouth for acne, nervousness, dementia, joint conditions, colds, upset stomach, spleen disorders, headaches, migraine, eye pain, body inflammation, fractures and swelling.

Some people apply vitex agnus-castus to the skin to flush out parasites and to prevent insect bites and stings.

Difficulty in becoming pregnant (infertility). There is some evidence that taking vitex agnus-castus by mouth can help some women get pregnant. These women are infertile because they do not have enough of the hormone called progesterone. However, vitex agnus-castus does not seem to work quickly. It can take from 3-7 months of treatment to achieve pregnancy.

Special Precautions & Warnings: Hormone-sensitive condition such as endometriosis; uterine fibroids; or cancer of the breast, uterus, or ovaries: Vitex agnus-castus can affect hormones and might affect estrogen levels. Don't use vitex agnus-castus if you have a hormone-sensitive condition.

In vitro fertilization: Vitex agnus-castus can interfere with the effectiveness of in vitro fertilization. Don't use vitex agnus-castus if you are undergoing this procedure.

Parkinson's disease. Vitex agnus-castus contains chemicals that affect the brain. These chemicals affect the brain similarly to some medications used for Parkinson's disease. Therefore, vitex agnus-castus might affect therapy for Parkinson's disease.

Birth control pills contain hormones. Taking vitex agnus-castus along with birth control pills might decrease the effectiveness of birth control pills. If you take birth control pills along with vitex agnus-castus, use an additional form of birth control such as a condom.

For children 8-14 years: 5-7 drops of tincture in a little warm water or orange juice, 2 times a day

For adults: 10 drops of tincture in a little warm water or orange juice, 2 times a day