This is a powerful cardiac stimulant. As such in syncope, thrombosis, hemorrhage, snake-bites, chloroform narcosis, may be given by inhalation. The edema and ulceration of mucous membranes produced by this powerful drug have been utilized as guiding symptoms for its use; hence in membranous croup with burning in esophagus. Aphonia. See Causticum.

Dose.--First to third potency; also five to ten minims, well diluted with water.

Extremities.--Excessive exhaustion and muscular debility. Rheumatism of shoulders. Skin hot and dry.

Respiratory.--Difficult respiration. Accumulation of mucus with incessant coughing. Loss of voice. Burning rawness in throat. Spasm of the glottis with suffocation; patient gasps for breath. Pain in esophagus on breathing deeply. Scraping and burning in throat and esophagus. Uvula covered with white mucus. Nasal diphtheria, with burning excoriating discharge.