2023年4月17日 · Antihistamines block histamine release from histamine-1 receptors and are mostly used to treat allergies or cold and flu symptoms, although some first-generation antihistamines (also called sedating antihistamines) may be used for other conditions, such as nausea or motion sickness.

2024年2月19日 · Antihistamine nasal sprays, such as azelastine (Astelin, Astepro), and olopatadine (Patanase) help relieve sneezing, itchy or runny nose, sinus congestion, and postnasal drip.

Antihistamines and decongestants, which unclog your nose and sinuses by narrowing the blood vessels, are the most commonly used allergy medications. Antihistamines come in tablets,...

2024年10月19日 · Several types of medicines are used to treat allergy symptoms. Here's what you should know. Allergy medicines are available as pills, liquids, inhalers, nasal sprays, eye drops, skin creams and shots, also called injections. Many allergy medicines are available without a …

2024年4月1日 · Antihistamines are a class of medications most often taken to treat allergy symptoms. There are first-, second-, and third-generation antihistamines. First-generation antihistamines can often treat other symptoms besides allergies. But they tend to cause more side effects, such as drowsiness.

2025年1月14日 · Antihistamines reduce or block histamines, so they stop allergy symptoms. These medicines work well to ease symptoms of different types of allergies, including seasonal (hay fever), indoor, and...

2023年2月24日 · In general, there is no cure for allergies, but there are several types of medications available -- both over-the-counter and prescription -- to help ease and treat annoying symptoms like...

2024年4月16日 · Allegra (fexofenadine), Claritin (loratadine), and Zyrtec (cetirizine) are over-the-counter (OTC) antihistamines used to treat allergies. They’re all similarly effective, but you may find that one works better for you.

Antihistamines used to treat allergy symptoms fall into two broad categories: sedating and non-sedating. The first category includes the older antihistamines. These allergy drugs relieve allergy symptoms but cause drowsiness and other side effects, including dry mouth.

2024年7月15日 · Common anti-allergy drugs, known as antihistamines, include Benadryl, Zyrtec, and Claritin. They reduce the impact of histamine on the body, relieving allergy symptoms. When you have an allergic...