# Chaste Tree Berry Herbs for Mares
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Chasteberry
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For thousands of years, chasteberry, Agnus castus, has been used by women suffering from menstrual cramps, premenstrual syndrome, other issues with the menses and for breast milk production stimulation. In humans, it is also used for acne treatment and infertility. In mares, it serves a similar purpose on the reproductive system, lessening the effects of the heat cycle. Humans may consume chasteberry in liquid or powder form, but for horses the powder form prevails. Neither pregnant women nor pregnant mares should take chasteberry.
Mares and PMS
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Like women, mares may suffer from premenstrual syndrome. The owner or barn manager can usually recognize the symptoms: moodiness, inability to focus on work, aggression, depression and physical problems due to cramping. Feeding chasteberry regularly may alleviate these symptoms, allowing the mare to concentrate on work and training. It may be especially helpful for mares competing in any discipline, permitting the mare to perform to her highest level of athletic ability without the PMS hindrance.
Administration
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Start giving the mare chasteberry powder in late winter, before most mares start going into season. Mix the powder in with feed. If she won't eat it, try hiding the taste by mixing it into moist beet pulp or mushy wet alfalfa and hay cubes. Feed chasteberry throughout the spring into late fall, when most mares stop having regular heat cycles. Chasteberry is usually safe with no serious side effects. Feed approximately 15 g daily to the average mare, adjusting the amount for ponies or larger mares.
Chasteberry Sources
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Commercial supplements containing chasteberry may be purchased at local feed stores or ordered online. Mare owners may also obtain chasteberry from vendors selling bulk herbs. As with any supplement, consult your veterinarian before feeding chasteberry. Chasteberry is also given to equines, not just mares, to alleviate symptoms of Cushing's Disease. The herb also affects the pituitary gland along with the uterus.
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