Antihistamines

Antihistamines Many people suffer from allergy symptoms and doctors typically use antihistamines to help provide relief to their patients. Antihistamines are also used to gain control of asthma. Histamine is a normal part of your body's defense mechanisms, but when histamine is released in response to an allergen, you may develop allergy symptoms. Antihistamines are available as prescriptions and over-the-medications. The most common brands include: Cetirizine antihistamine molecule: Molecular Chemical Formula: C20H26