How much Benadryl (diphenhydramine) is considered too much?

Benadryl (diphenhydramine) Either the recommended amount based on weight through the directions on the box or following your doctors recommendations if the recommended dose they made is higher.
1 mg per 2 pounds. For children the correct dose is 1 mg/kg ( a kilogram is 2.2 pounds) every six hours as needed. Adults usually take 25-50 mg per dose. If you or your child need more than that you should consult your physician for advice. There are other drugs that are equally effective but cause less or no sedation and have fewer side-effects than Diphenhydramine (benadryl).