Generic name: acetaminophen / diphenhydramine capsules
Sominex is used to relieve short-term sleeplessness associated with pains and minor aches. It may also be used by your physician to treat certain other conditions.
It refers to the analgesic and antihistamine combination. Diphenhydramine causes drowsiness, helping to fall asleep. Acetaminophen affects certain areas in the nervous system and brain to reduce pain.