Many women suffer from menorrhagia, or prolonged menstruation. While no medicinal herb can reliably halt a menstrual cycle, several products can shorten or lighten menstrual flow. However, few scientific studies have researched most medicinal herbs, so the potential side effects and drug interactions are not well-understood. Consult a health care provider before using medicinal herbs if you have a medical condition or take a prescription drug.
Cramp Bark
This ornamental plant yields a powerfully antispasmodic bark that can help to reduce menstrual flow. Traditionally, herbalists have recommended cramp bark as a treatment for heavy menstruation, menstrual cramps and threatened miscarriage. Cramp bark relaxes spasms in the uterus, leading to fewer menstrual contractions and reduced menstrual flow. The University of Maryland Medical Center recommends two tsps. of cramp bark, steeped in one cup of boiling-hot water, three times a day.
Shepherd's Purse
Historically, shepherd's purse has been used as a treatment for postpartum hemorrhage. In the early 1900s, herbalist Margaret Grieve noted that shepherd's purse could control excessive bleeding from the uterus during both menstruation and the postpartum period. Shepherd's purse appears to work by constricting blood flow to the uterus. In its native East Asian range, shepherd's purse is consumed as a table vegetable; it is unlikely to produce any side effects or negative reactions.
Chasteberry
Also known as vitex or monk's pepper, chasteberry has a long-standing reputation as a treatment for menstrual disorders. The National Center for Complementary and Alternative Medicine notes that chasteberry may help to stabilize levels of female sex hormones like estrogen and progesterone. However, little evidence exists to support its use as a treatment for heavy or prolonged menstruation. Avoid chasteberry if you are taking hormone-affecting drugs, such as oral contraceptives or hormone replacement therapy, as it could theoretically alter the effectiveness of these drugs.
