How do antihistamines relieve sleeplessness?

Stacy Wiegman, PharmD

Pharmacy

An antihistamine is an over-the-counter drug that is generally used to treat allergies; however some of the older style antihistamines, such as diphenhydramine and dimenhydrinate, also make you very sleepy and may ease insomnia. Talk to your doctor before you take any medication for insomnia.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.