First-generation antihistamines, such as chlorphenamine or promethazine, are short-acting. Side effects include drowsiness, dry mouth and blurred vision. You shouldn't drive or operate machinery ...

Very Serious. These medicines may interact and cause very harmful effects and are usually not taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.

Medically reviewed by Daniel Combs, MD Benadryl (diphenhydramine) is an over-the-counter (OTC) antihistamine commonly used to ...

For more severe allergy symptoms, or if you're experiencing side effects from OTC products, your doctor may prescribe an antihistamine with a stronger dosage and fewer side effects. Some ...

Pills with antihistamines. Taking these together ... You are having more side effects from a drug Your drug doesn’t seem to be working as well as it was before In general, call your doctor ...

Antidepressants known as selective serotonin reuptake inhibitors, or SSRIs have been the first line of treatment for mood ...

Read on to learn about Emgality’s possible side effects, cost, and more. Emgality works by blocking the activity of a protein in your body called calcitonin gene-related peptide. This protein ...