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So, antihistamines help relieve or prevent those symptoms.Let’s look closer at the different choices you have for allergy medication: So, which of these treatments are best for you?Histamine produces increased vascular permeability, causing fluid to escape from capillaries into tissues, which leads to the classic symptoms of an allergic reaction — a runny nose and watery eyes. Antihistamines suppress the histamine-induced wheal response (swelling) and flare response (vasodilation) by blocking the binding of histamine to its receptors or reducing histamine receptor activity on nerves, vascular smooth muscle, glandular cells, endothelium, and mast cells.
The jury is still out on whether homeopathic medicines are actually effective, though some people swear by them.
Histamine is a chemical in your body that over-reacts to certain triggers, or allergens, such as pollen, mold, dust mites or pet dander and produces allergy symptoms.
These symptoms can include sneezing, nasal stuffiness, sniffling, and itching.
However, if itching is still a problem your doctor may prescribe you an antihistamine.
Antihistamines are most commonly used to control the symptoms of allergies such as hay fever.Although typical people use the word “antihistamine” to describe drugs for treating allergies, doctors and scientists use the term to describe a class of drug that opposes the activity of histamine receptors in the body.-receptor are used to treat allergic reactions in the nose (e.g., itching, runny nose, and sneezing) as well as for insomnia.