Diphenhydramine Sleep Aid
Wal-Sleep Z is an over-the-counter sleep aid designed for temporary relief of occasional sleeplessness. It contains an antihistamine ingredient known for its sedating properties, helping users fall asleep more easily. This product is intended for adult use when occasional sleep difficulties arise.
Wal-Sleep Z is a store-brand OTC sleep aid used to help relieve temporary sleeplessness in adults.
Key facts at a glance
- RxNorm
- 1363470
- Generic
- Wal-Sleep Z
- 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.
Wal-Sleep Z is used for the temporary relief of occasional sleeplessness or difficulty falling asleep. It is not intended for regular, long-term use or for treating chronic insomnia.
The active ingredient is an antihistamine with sedating properties. It works by blocking histamine receptors in the brain, producing a drowsiness effect that helps facilitate sleep onset.
For adults and children 12 years and older. Avoid alcohol and do not operate machinery after taking. May cause morning drowsiness. Should only be used temporarily (consult a doctor if sleeplessness persists beyond 2 weeks). May interact with other medications; speak with a pharmacist or doctor before use if taking other products.
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 August 26, 2026. · Read our editorial policy