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Benadryl diphenhydramine is a brand-name, over-the-counter medication that's classified as an antihistamine. It's used to help relieve symptoms of hay fever seasonal allergies , other allergies, and the common cold , as well as itchy skin due to insect bites , hives, and other causes. Benadryl is effective for decreasing itchy skin from hives. It's often considered a first-choice treatment for hives. But although it's effective for decreasing symptoms of seasonal allergies, Benadryl isn't often used for this purpose.
Doctors recommend Benadryl and other diphenhydramine products to treat the symptoms of allergy or hay fever such as a runny nose, sneezing, itchy eyes, and itching in your nose or throat. Under other brand names, people sometimes take diphenhydramine to treat motion sickness and as a sleep aid. This over-the-counter OTC medication blocks the actions of histamine , a naturally occurring substance in the body that causes allergy symptoms.
Medically reviewed by Drugs. Last updated on Apr 17, Uses : -Parkinsonism of the elderly who are unable to tolerate more potent agents -Mild cases of parkinsonism in other age groups -Other cases of parkinsonism in combination with centrally acting anticholinergic agents. Diphenhydramine Citrate: 76 mg orally once a day at bedtime Diphenhydramine Hydrochloride: 50 mg orally once a day at bedtime Comment : -Patients should contact their healthcare provider if symptoms of insomnia persist for more than 2 weeks while receiving treatment. Uses : -As a nighttime sleep aid -To reduce difficulty falling asleep -Relief of occasional sleeplessness.