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).

There’s also a prescription steroid and antihistamine nasal spray called azelastine (Dymista) that seems to improve allergy symptoms more than either drug when used alone. If you’re really ...