
Blue Cohosh (Caulophyllum thalictroides)
Photo: H. Zell · CC BY-SA 3.0
- Female Reproductive
- 4 conditions
- Licensed photo
Overview
Blue cohosh is an upright perennial herb reaching 3 feet in height, with large three-lobed leaves, yellow to purple flowers, and striking blue berries. It grows wild in much of eastern North America from Manitoba to Alabama, preferring woodland valleys and damp, north-facing slopes. The name 'cohosh' comes from the Algonquin language, and the plant was a popular remedy among many Native American tribes. Though taken by both sexes for genitourinary issues, it was primarily valued as a women's herb, and that tradition continues in modern herbal practice.
Traditional uses & properties
Blue cohosh is renowned as a uterine tonic that brings relief from uterine and ovarian pain while regulating menstrual blood flow. Herbalists use it in small doses over time to induce delayed menstruation or labor. Taken during labor, it strengthens contractions and eases the pain of childbirth. Its dual tonic action stimulates and relaxes the uterus simultaneously, making it helpful for relieving painful menstrual symptoms such as cramps and breast pain. The herb also benefits ovarian pain and has anti-inflammatory activity, which may be useful in treating arthritic and rheumatic conditions. The root and rhizome contain alkaloids, steroidal saponins, and resin.
Traditional preparations
Preparation amounts are not shown for this herb. It is toxic, restricted, or otherwise unsafe to self-dose - the margin between a traditional dose and a harmful one is too small to publish as reference material. If you are considering it, that conversation belongs with a doctor or a qualified practitioner, not a website.
Safety & precautions
Use only under professional supervision. Do not take during pregnancy or while trying to conceive, as it stimulates uterine contractions and could induce miscarriage. Avoid during heavy menstrual bleeding. It can be used by women past their due date to induce labor, but only with professional oversight. The plant is mildly toxic in large doses and can cause contact dermatitis. Not recommended while breastfeeding.
Drug & food interactions
Interaction data is not available for this herb - talk to a pharmacist before combining it with any medication. A blank entry here means we have not documented interactions, not that none exist.
Habitat
Blue cohosh grows wild throughout much of eastern North America, from Manitoba to Alabama. It prefers woodland valleys and damp, north-facing slopes, and is mainly wild-harvested but also cultivated commercially. The root and rhizome are harvested in autumn.
Traditionally used for
- Menstrual Pain11 herbs · 2 free
- Premenstrual Syndrome3 herbs · 2 free
- Arthritis11 herbs · 2 free
- Rheumatism9 herbs · 2 free
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Frequently asked questions
What is Blue Cohosh (Caulophyllum thalictroides) traditionally used for?
Traditional sources describe Blue Cohosh (Caulophyllum thalictroides) as follows: Blue cohosh is renowned as a uterine tonic that brings relief from uterine and ovarian pain while regulating menstrual blood flow. Herbalists use it in small doses over time to induce delayed menstruation or labor. Taken during labor, it strengthens contractions and eases the pain of childbirth. Its dual tonic action stimulates and relaxes the uterus simultaneously, making it helpful for relieving painful menstrual symptoms such as cramps and breast pain. The herb also benefits ovarian pain and has anti-inflammatory activity, which may be useful in treating arthritic and rheumatic conditions. The root and rhizome contain alkaloids, steroidal saponins, and resin.
How is Blue Cohosh (Caulophyllum thalictroides) prepared?
Preparation amounts are not shown for this herb. It is toxic, restricted, or otherwise unsafe to self-dose - the margin between a traditional dose and a harmful one is too small to publish as reference material. If you are considering it, that conversation belongs with a doctor or a qualified practitioner, not a website.
What safety cautions apply to Blue Cohosh (Caulophyllum thalictroides)?
Use only under professional supervision. Do not take during pregnancy or while trying to conceive, as it stimulates uterine contractions and could induce miscarriage. Avoid during heavy menstrual bleeding. It can be used by women past their due date to induce labor, but only with professional oversight. The plant is mildly toxic in large doses and can cause contact dermatitis. Not recommended while breastfeeding.







