Overview
Mild hyperthyroidism patterns (palpitations, tremor, heat, weight loss); nervousness/insomnia; PMS and breast pain; bleeding tendencies including nosebleeds and heavy menses (per page).
Plant family
Lamiaceae / Labiatae
Parts used
Above-ground parts
Actions
Astringent
Affinities
Body systems
Tissue states
Traditional use
Traditional use for overactive thyroid symptoms (tight breathing, palpitations, shaking). Historical poultice use for bruising; historical snakebite use (chewed root + topical application) as listed in page notes.
Current use
Mild hyperthyroidism patterns (palpitations, tremor, heat, weight loss); nervousness/insomnia; PMS and breast pain; bleeding tendencies including nosebleeds and heavy menses (per page).
Preparation
Oral preparations; poultice (historical).
Dosage guidance
Typical: 0.2–2 g/day (individualize based on weight/age).
Cautions & contraindications
Avoid with thyroid enlargement, hypothyroid, or with other thyroid-related products. May increase hypoglycemia risk; monitor closely in diabetes. Avoid in pregnancy (anti-gonadotropic/anti-thyrotropic activity) and lactation (anti-prolactin activity). Rare: long-term excessive dosing associated with thyroid enlargement; taper rather than stopping suddenly. AHPA Class 2b/2c/2d; not on FDA GRAS list.
Evidence notes
Page notes a lack of high-quality information on use/safety. Mechanism notes include anti-thyrotropic activity, inhibition of peripheral T4→T3 deiodination, and prolactin-lowering effects. Use requires thyroid-pattern clarity; monitor and avoid in pregnancy/lactation per safety notes.