COHOSH, BLUE (Caulophyllum thalictroides) Perennial medicinal menstruation poisonous labour PREGNANCY ALERT sow: early spring late summer, early autumn much esteemed by Amerindians Caulospaonin, a chemical component of blue cohosh, actively stimulates uterine contractions and promotes blood flow to the pelvid region. It is considered one of the best uterine stimulant herbs available. aids labour promotes menstruation and checks excessive menstruation abdominal problems urinary problems potential as a contraceptive on account of its estrogenic properties Labour: Often combined with black cohosh (the two are NOT related, even though their names are similar) and used as a tea and/or tincture during the last week of pregnancy to prepare the uterus for an easy birth and to stimulate uterine contractions. It is ver beneficial for prolonged labor to help bring on and/or stimulate contractions. PREGNANCY ALERT: Because of its strong uterine stimulant properties, blue cohosh should not be used at any time during pregnancy, except in the l last week, and then only with the guidance of an experienced herbalish and midwife or doctor.