You can purchase most antihistamines over-the-counter (OTC), meaning you do not need a prescription. Most are taken in pill ...

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 ...

Over-the-counter antihistamines were among the most common substances involved in these adverse events, along with prescription antidepressants, painkillers and illegal synthetic cannabinoids.

These standard antihistamines are available over-the-counter in the form of oral pills, eye drops, and nasal sprays - but stronger ones can also be prescribed by doctors. Here's what you should ...

Over-the-counter sleep aids for insomnia are generally safe. But products taken night after night may lose effectiveness or, ...