Phenothiazine

Phenothiazines are antipsychotic drugs. There are three groups:

• I - Aliphatic compounds with a strong sedative effect, but moderate extrapyramidal and autonomic effects
• II - Piperidines have moderate sedative effects, fewer extrapyramidal effects than aliphatic compunds but more autonomic effects.
• III - Piperazines - few sedative effects, pronounced extrapyramidal effects but less autonomic effects.