There are two main types of antihistamines—first-generation and second-generation. First-generation antihistamines, such as chlorphenamine or promethazine, are short-acting. Side effects include ...

These first-generation antihistamines commonly cause drowsiness because they interrupt the circadian rhythms that control your normal feelings of sleepiness. In the 1980s, the second generation of ...

Antihistamines may be first generation (sedating) or second generation (nonsedating). These two types may lead to different reactions if a person takes too much. Second generation antihistamines ...

And antihistamines, the ones that last 12 to 24 hours. Those are the second generation antihistamines as opposed to the first ...

The lead candidate, EPX-100, is a first-generation antihistamine with a long history of safe use. Epygenix identified the potential to use the drug to treat Dravet syndrome by screening 3,000 ...