For more information about your specific dosage, talk with your doctor or pharmacist. Oral forms of Benadryl are approved to treat allergies or allergic reactions in kids age 6 years and older.

Arguably the easiest way to dose Benadryl is by weight. The following chart describes the maximum Benadryl dose in milligrams (mg) or milliliters (mL) based on a person's weight in pounds (lbs).

It is essential to follow the doctor’s direction and dosage recommendations. The active ingredient in Benadryl is an antihistamine called diphenhydramine. This ingredient is also found in many ...