Chlorcyclizine is a first generation phenylpiperazine class antihistamine used to treat urticaria, rhinitis, pruritus, and other allergy symptoms. Chlorcyclizine also has some local anesthetic, anticholinergic, and antiserotonergic properties, and can be used as an antiemetic. Chlorcyclizine temporarily relieves the symptoms due to hay fever or other upper respiratory allergies. It has also being shown to possess in vitro and in vivo activity against hepatitis C virus.

Dinoprost is the synthetic or partially synthetic, naturally-occurring prostaglandin F2 alpha (trade mark Prostin F2 alpha). Dinoprost has been used for therapeutic termination of pregnancy. Although the exact mode of action in pregnancy termination in humans is not fully defined, when Prostin F2 alpha is administered by the intrauterine route it initiates rhythmical uterine contractions which, if continued for a sufficient time, are capable of expelling the contents of the uterus. Sensitivity of the pregnant uterus to prostaglandins is lower during early and mid-pregnancy than at term.

Chlormethiazole has sedative, hypnotic, anticonvulsant and neuroprotective properties. This drug is approved in different counties under the different brand name (e.g., Heminevrin) and is used for the management of restlessness and agitation in the elderly, short-term treatment of severe insomnia in the elderly and treatment of alcohol withdrawal symptoms. Clomethiazole interacts with the picrotoxin/barbiturate site of the GABAA-receptor-chloride channel complex. Clomethiazole is pharmacologically distinct from both the benzodiazepines and the barbiturates. Given alone its effects on respiration are slight and the therapeutic index high.

Chlormethiazole has sedative, hypnotic, anticonvulsant and neuroprotective properties. This drug is approved in different counties under the different brand name (e.g., Heminevrin) and is used for the management of restlessness and agitation in the elderly, short-term treatment of severe insomnia in the elderly and treatment of alcohol withdrawal symptoms. Clomethiazole interacts with the picrotoxin/barbiturate site of the GABAA-receptor-chloride channel complex. Clomethiazole is pharmacologically distinct from both the benzodiazepines and the barbiturates. Given alone its effects on respiration are slight and the therapeutic index high.