Herpes zoster, pemphigus, and trismus are produced by this drug. Coldness, sleepiness, loss of consciousness are marked. Vertigo.

Head.--Cerebral congestion; hallucination of vision, hearing and touch. Inclination to turn in a circle. Jaws firmly clenched. Trismus. Heaviness of head. Sticking pain in temples. Roaring ears.

Eyes.--Ocular paralysis, hemianopsias, disturbed pupillary reaction, optic neuritis and atrophy, subconjunctival and retinal haemorrhages.

Skin.--Anaesthesia; vesication along course of nerves; herpes zoster; pemphigus, with large and small vesicles. Hand icy cold.

Sleep.--Deep. Prolonged; sleepiness for several days.

Dose.--First attenuation.