This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Cicuta Virosa, Water Hemlock. This highly toxic agent is used in dilution by the homeopaths in spasmodic affections, such as singultus, trismus, tetanus, and convulsions. It is mentioned here chiefly to call attention to the highly toxic character of the mother tincture. The eclectics call a similar plant Oenanthe (q. v.), and it was formerly used by them in epilepsy generally, but is now used in epilepsy marked by anemia of the brain and cord.
Their ec. tr. Oenanthe is toxic in 4 I. doses, and is given in doses of 1-20 to 1/2 I.
Cicutine, Conicine, and Coniine are practically identical, but differ from Conium (q. v.). The hydrobromate of coniine is used as an antispasmodic in regular practice in just about the same range of affections as the homceo-paths use cicuta. The dose of the hydrobromate is 1-60 to 1-15 gr. The maximum dose is 1-6 gr., and is sometimes used in tetanus. This drug has been suggested in cerebro-spinal meningitis. The present author would urge great caution in its employment.