Overview
Antidiarrheal. Antispasmodic. Postpartum antispasmodic. Tonic. Uterine stimulant. Use with painful menses. Miscarriage prevention (per text).
Plant family
Caprifoliaceae
Parts used
Root and stem bark
Actions
Antispasmodic · Astringent · Tonic
Affinities
Reproductive · Digestive
Body systems
Reproductive · Digestive
Taste profile
Bitter and astringent
Tissue states
Traditional use
Long history of use by Native Americans for menstruation/pregnancy/childbirth-associated symptoms and uterine disorders (per text).
Current use
Antidiarrheal. Antispasmodic. Postpartum antispasmodic. Tonic. Uterine stimulant. Use with painful menses. Miscarriage prevention (per text).
Preparation
Decoction; tincture
Dosage guidance
Decoction: 2 tsp dried bark boiled in 1 cup water; simmer 10 min; 3× daily. Tincture (1:5 in 60%): 5–10 mL 3× daily.
Cautions & contraindications
Contains oxalic acid; use caution with kidney stone history. Avoid use while pregnant. Use caution with aspirin allergy/asthma due to salicylate constituents. Mineral-binding potential: simultaneous use with calcium, iron, and zinc might decrease mineral absorption; oxalic acid can bind multivalent metal ions.
Evidence notes
Course text notes uterine/smooth muscle spasmolytic activity and vasoconstriction (2000 study); interpret within safety constraints, especially pregnancy-related cautions.