Hydrocyanicum Acidum. Prussic Acid. HCN. One measure of the dilute acid of B. P. to two measures of rectified spirit makes the 1st centesimal dilution; rectified spirit for all above.

HYDROCYANICUM ACIDUM Prussic Acid (HYDROCYANIC ACID) One of the most toxic agents known. Convulsions and paralysis express the action of this remedy. Spasmodic constriction in larynx, feeling of suffocation, pain