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Treats symptoms caused by hay fever, allergies, or the common cold. May be used as a nighttime sleep aid. Belongs to a class of drugs called antihistamines.

Brand Names

Benadryl Allergy
Children's Benadryl Allergy Fastmelt
Serabrina LA France
Siladryl Allergy
The Medicine Shoppe Medi-Phedryl
Benylin Decongestant Cough
Children's Pedia Care
Diphenhydramine HCl
Diphenyl Elixir

When You Should Not Take The Medication

You should not use this medicine if you have ever had an allergic reaction to diphenhydramine. This medicine should not be given to newborn infants or women who are breast feeding.

How To Store And Dispose Of This Medicine

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Do not freeze the liquid.

Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

Keep all medicine away from children and never share your medicine with anyone.

Possible Side Effects While Using This Medicine

Call your doctor right away if you notice any of these side effects:
Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing.
Hallucinations (seeing things that are not really there).
Lightheadedness or fainting.
Pain when urinating, or change in how much or how often you urinate.

If you notice these less serious side effects, talk with your doctor:
Constipation, nausea, or stomach upset.
Dry nose, mouth, or throat.
Nervousness or excitability, especially in children.
Upset stomach.
Thick mucus in your nose or throat.

If you notice other side effects that you think are caused by this medicine, tell your doctor.