Caulophyllum thalictroides

Made from blue cohosh — the American woodland herb whose alkaloids held an official place in the pharmacopoeias as a uterine remedy, and the classical friend of the labouring woman.

SourceButtercup familyRanunculaceae

The whole picture, in one breath

Think of a uterus that will not do its work: irregular, painful, ineffective contractions; menses that wander and misbehave; rheumatic twinges in the small joints of women; and the exhausted aftermath of difficult labour. The irregular, uncooperative uterus: that is Caulophyllum.

The substance, in plain words

Blue cohosh is the blue-berried woodland herb of eastern North America. Its methylcytisine alkaloid genuinely stimulates uterine muscle — it was an official uterine drug of the United States Pharmacopeia, used by midwives and physicians for decades, and is genuinely toxic in overdose.

The traditional picture Classical sources

The inner state

The body

Modalities (worse and better factors)

Worse from ⬇Better from ⬇
cold damp weather; exertion; at night; the cycle's irregularity.warmth; rest; the flow establishing itself.

Where it acts (organ affinities)

Uterus (labour, cycle), small joints of women, general vitality after birth.

Where the classical picture comes from

The midwives' herb — official, alkaloid-active, genuinely uterine — gave the proving its frame; the remedy became the classical companion of the irregular labour and the wandering cycle, in an era when childbirth was women's greatest danger.

The substance in real medicine Pharmacology

What this section is: the pharmacology and toxicology of the source substance. It is not clinical evidence that a homeopathic preparation of it treats any condition. What controlled trials do and do not show is set out on the Evidence page.

Blue cohosh was a real, official drug: the USP listed it, and its uterine-stimulating alkaloid is documented pharmacology. It is also genuinely dangerous in overdose — its toxicity is recorded. Modern obstetrics manages labour with monitored oxytocin and skilled midwifery; the herb belongs to history's medicine cupboard, respectfully.

Look-alikes (how the classical authors told it apart)

RemedyLooks similar because…Tells it apart because…
Cimicifuga racemosaWomen's rheumatism and moodCimicifuga is the dark, gloomy, rheumatic woman with cervical pains; Caulophyllum the irregular uterus with small joints.
Secale cornutumAfter-birth bleedingSecale bleeds dark and cold; Caulophyllum lacks the co-ordination rather than the clot.
Pulsatilla nigricansGentle, changeable femalePulsatilla is tearful and mild; Caulophyllum is spasmodic and irregular.
Sabina officinalisThreatened miscarriageSabina bleeds bright with clots and hates music; Caulophyllum's pains simply won't co-ordinate.
Safety. Bleeding in pregnancy, reduced fetal movements, or difficult labour are obstetric emergencies — hospital care only; never self-dose with blue cohosh.
Compiled by Dr. Sohil Momin, BHMS · Open Materia Medica