SEDATIVE HYPNOTICS -

They depress the activity of CNS.

Reduce excitement, give feeling of calm.

Higher doses induces sleep.

Sleep inducing drugs are also called sleeping pills or hypnotics.

(a) Barbiturates -

Synthetic drugs drived from barbituric acid.

Withdrawal causes symptoms of epilepsy.

Repeated use leads to barbiturism involving skin eruption accompanied by chill, fever & headache.

They are lethal to body if taken with alcohal can lead to death.

(b) Benzodiazepines -

These are antianxiety as well as sedative drugs.