Allergies affect quality of life. And people who have allergies feel worse than people who have diabetes and blood pressure problems, and if they're out their suffering they really should talk to their doctor. Safer, stronger, longer-acting and more targeted medications have been developed in recent years, and more are on the way. Histamine is released by your body as part of an allergic reaction. It can cause redness, swelling, itching, a runny nose and watery eyes, among other things.
Antihistamines work by preventing the effects of histamine.
They come in tablets, capsules, sprays, liquids injections or creams. Allergies and colds often cause stuffy noses. Decongestants work by narrowing blood vessels. This relieves nasal congestion. The main airways between your throat and lungs are called bronchi.