Acefylline piperazine - Bronchial asthma. Chronic bronchitis. Emphysema. Phenobarbital - Pharmacology: Depresses sensory cortex, decreases motor activity, alters cerebellar function and produces drowsiness, sedation, and hypnosis. Indication: Short-term treatment of insomnia- long-term treatment of generalized tonic-clonic and cortical focal seizures- emergency control of acute convulsions- preanesthetic sedation.