Diphenhydramine Allergy
Wal-Dryl Allergy is an over-the-counter antihistamine medication designed to provide relief from common allergy symptoms such as sneezing, runny nose, itchy/watery eyes, and itching of the nose or throat. It contains diphenhydramine as its active ingredient, which works by blocking the effects of histamine, a substance produced by the body during allergic reactions. This medication is suitable for adults and children seeking temporary relief from seasonal allergies, pet allergies, and other mild allergic conditions.
Wal-Dryl Allergy is an OTC antihistamine that relieves allergy symptoms like sneezing, runny nose, and itchy eyes by blocking histamine.
Key facts at a glance
- RxNorm
- 1090073
- Generic
- Wal-Dryl Allergy
- 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.
Treats symptoms of seasonal and year-round allergies, including sneezing, runny nose, itchy/watery eyes, and itching of the nose or throat. May also be used for relief of symptoms caused by pet dander, dust, or mold exposure.
Contains diphenhydramine, a first-generation antihistamine that works by blocking H-1 receptors in the body, preventing histamine from causing allergic symptoms. It also has sedating properties that may promote drowsiness.
May cause drowsiness; avoid driving or operating machinery until you know how it affects you. Should not be combined with alcohol or other sedating medications. Consult a healthcare provider before use if pregnant, breastfeeding, or taking other medications. Not recommended for children under 6 unless directed by a doctor. Do not exceed recommended dosage.
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