HYDROCYANICUM ACIDUMPrussic 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 and tightness in chest, palpitation; pulse weak, irregular. Singing sensation at the epigastrium. Hysterical and epileptic convulsions. Cyanosis. Collapse, due to some pulmonary condition not a cardiac collapse. Catalepsy. Cholera. Stage of collapse (Ars; Verat). Coldness. Tetanus narcolepsy.
Mind.--Unconscious. Wild delirium. Fear of imaginary troubles. Fears everything-horses, wagons, houses falling, etc.
Head.--Violent stupefying headache. Brain feels on fire. Pupils motionless or dilated. Supra-orbital neuralgia, with flushing on same side of face.
Face.--Jaws clenched in rigid spasm. Froths at mouth. Pale, bluish lips.
Stomach.--Tongue cold. Drink rumbles through throat and stomach. Gastralgia; worse when stomach is empty. Great sinking at pit of stomach. Pulsative pain in praecordial region.
Respiratory.--Noisy and agitated breathing. Dry, spasmodic, suffocative cough. Asthma, with contraction of throat. Whooping-cough. Paralysis of lungs (Aspidos). Marked cyanosis; venously congested lung.
Heart.--Violent palpitation. Pulse, weak irregular. Cold extremities. Torturing pain in chest. Angina pectoris (Spigel; Oxal ac).
Sleep.--Yawning with shivering. Irresistible drowsiness. Vivid, incoherent dreams.
Relationship.--Antidotes: Ammon; Camph; Opium.
Compare: Cicuta; Oenanthe; Camph; Lauroc.
Dose.--Sixth and higher potencies.