WebAn allergic reaction occurs when the immune system overreacts to an allergen—typically these are harmless substances like dust or pollen. The immune system sometimes … WebFeb 28, 2024 · Zyrtec (cetirizine) is an over-the-counter antihistamine used to treat hives (urticaria) and seasonal allergies ( allergic rhinitis, or hayfever). Zyrtec is in the class of drugs referred to as second-generation antihistamines. It is recommended for children 2 years of age and older and for adults. It is available as a tablet that can be ...
Antihistamines May Help Prevent Allergic Reactions …
WebApr 21, 2024 · Benadryl Injection Description. Benadryl (diphenhydramine hydrochloride) is an antihistamine drug having the chemical name 2- (Diphenylmethoxy)-N,N-dimethylethylamine hydrochloride. It occurs as a white, crystalline powder, is freely soluble in water and alcohol and has a molecular weight of 291.82. The molecular formula is C … WebApr 12, 2024 · Jump in a cool shower or air-conditioned room to help minimize a niacin reaction. It's unlikely that you have a deficiency of niacin — also known as vitamin B3 — if you're including meat, dairy and … ray cresp speedway rider
Antihistamines: Definition, Types & Side Effects - Cleveland Clinic
WebMar 21, 2024 · Benadryl (diphenhydramine) is a brand-name medication that’s classified as an antihistamine. It’s used to help relieve symptoms of hay fever ( seasonal allergies … WebJun 2, 2024 · These may be signs of a severe allergic reaction and require emergency care. ... Products containing calamine can help relieve itching by cooling your skin. ... (Benadryl) This oral antihistamine ... WebAntihistamines. When histamine, a chemical created by your immune system, overreacts to an allergen such as pollen and pet dander, it can cause symptoms such as coughing, sneezing and watery eyes. Antihistamines are medications that help with allergies, and also with stomach problems, cold, anxiety and more. Antihistamines are a class of drugs ... ray crews obituary