A decade after UC San Francisco scientists identified an over-the-counter antihistamine as a treatment for multiple sclerosis, researchers have developed an approach to measure the drug's ...

The most common substances identified in these poisonings were: Dipenhydramine—an over-the-counter antihistamine commonly used for hay fever and nasal congestion Tramadol—an opioid prescribed ...

If this sounds like you, an antihistamine may help ... These standard antihistamines are available over-the-counter in the form of oral pills, eye drops, and nasal sprays - but stronger ones ...