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Diphenhydramine, sold under the brand name Benadryl among others, is an antihistamine and sedative.It is a first-generation H 1-antihistamine and it works by blocking certain effects of histamine, which produces its antihistamine and sedative effects.
Antihistamines are drugs which treat allergic rhinitis, common cold, influenza, and other allergies. [1] Typically, people take antihistamines as an inexpensive, generic (not patented) drug that can be bought without a prescription and provides relief from nasal congestion, sneezing, or hives caused by pollen, dust mites, or animal allergy with few side effects. [1]
Allergen immunotherapy is an alternative treatment considered in some patients, with a success rate of 80%-90% in reducing symptoms, [3] but requiring a much longer duration of therapy. The choice of medications depends on the disease to be treated, its severity and patient factors.
However, drugs often contain many different substances, including dyes, which could cause allergic reactions. This can cause an allergic reaction on the first administration of a drug. For example, a person who developed an allergy to a red dye will be allergic to any new drug which contains that red dye.
Medications that commonly interfere with skin testing include the following: Histamine antagonists like Allegra, [10] Claritin, Benadryl, [10] Zyrtec [10] Antidepressants like Amitriptyline, [10] Doxepin [10] Antacid like Tagamet [10] or Zantac [10] Patients who undergo skin testing should know that anaphylaxis can occur anytime. So if any of ...
Take an OTC cough medication like guaifenesin or an antitussive medication like dextromethorphan. Other treatments for a cough. There are other things you can try to help soothe a cough.
H 1-antihistamines can be administered topically (through the skin, nose, or eyes) or systemically, based on the nature of the allergic condition. The authors of the American College of Chest Physicians Updates on Cough Guidelines (2006) recommend that, for cough associated with the common cold, first-generation antihistamine-decongestants are ...
In the United Kingdom, Benadryl can be found as Benadryl Allergy Relief. The main ingredient in this medication is acrivastine. Acrivastine is a non-drowsy antihistamine used to relieve allergies. It can treat hay fever, hives, insect bites and stings, conjunctivitis and eczema. [8] Benadryl Allergy Relief contains 8 mg of acrivastine in each ...