Diphenhydramine
Sominex is a brand-name over-the-counter sleep aid medication. It is designed to help adults who have difficulty falling asleep or staying asleep. The medication is intended for short-term use to address occasional insomnia.
Sominex is an OTC sleep medication used to help people who have trouble falling asleep.
Key facts at a glance
- RxNorm
- 152371
- Generic
- Sominex
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Sominex is used for the temporary relief of occasional sleeplessness and insomnia. It helps individuals who struggle to fall asleep at the beginning of the night.
Sominex contains an antihistamine that produces drowsiness as a side effect. It works by affecting certain brain signals involved in the sleep-wake cycle, helping to initiate sleep.
This medication is for short-term use only and should not be used for more than 2 weeks without consulting a healthcare provider. It may cause drowsiness, dizziness, and next-day grogginess. Avoid alcohol and use caution when operating machinery. Consult a doctor before use if you have certain medical conditions or are taking other medications.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy