An overdose of Benadryl® (diphenhydramine) is potentially serious and requires immediate medical attention. The specific effects of an overdose will vary, depending on how much of the medication was taken and whether it was taken with other drugs or substances. The overdose could cause hallucinations, rapid breathing, a rapid heart rate, and slowing of the digestive tract. Treatment for an overdose may consist of taking certain medicines, getting your stomach "pumped," or supportive care.
(Click Benadryl Overdose to learn about other possible symptoms of an overdose and for more details about the possible treatment options. You can also click on the various links in the box to the right to access specific topics on Benadryl.)