Benadryl
Benadryl is a fast-acting allergy medicine that helps relieve symptoms like hay fever and skin reactions.
Form
kapseli, kova
Strength
8 mg
Active Ingredient
Acrivastine
Manufacturer
McNeil / JNTL Consumer Health (Finland) Oy
How to Use
Dosage
Take 1 capsule as needed.
Method
Swallow the capsule whole with water.
Important
Do not take more than 3 capsules in a 24-hour period.
Possible Side Effects
COMMON
- •Drowsiness
RARE
- •Allergic reactions (including shortness of breath and swelling of the face or throat)
- •Dizziness
- •Palpitations (fast or irregular heartbeat)
- •Dry mouth
- •Rash
Important Warnings
- Do not take Benadryl if you are allergic to acrivastine or any other ingredient in this medicine.
- Do not take Benadryl if you have had allergic reactions to an older antihistamine called triprolidine (like Actidil, Pro-Actidil) before.
- Do not take Benadryl if you have very severe kidney problems.
- Do not give Benadryl to children under 12 years of age.
- Avoid drinking a lot of alcohol while taking this medicine, as it can make you feel more drowsy.
Show 5 more warnings
- If you are pregnant, breastfeeding, or planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.
- This medicine can cause drowsiness. Be careful when driving or operating machines, especially when you first start taking it.
- If your doctor has told you that you cannot tolerate some sugars (like lactose), talk to your doctor before taking this medicine.
- If you are going for an allergy test, stop taking Benadryl at least 2 days before the test.
- If you experience a severe allergic reaction (like difficulty breathing, swelling of the face or throat), stop taking this medicine and seek medical help right away.
Use in Elderly Patients
Category C
Suitable for older adults, with specific precautions. Reduce the dose in moderately severe renal impairment. (updated 19.9.2025)