what is a antihistamine mean
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Antihistamine An antihistamine is a type of pharmaceutical drug that opposes the activity of histamine receptors in the body. Antihistamines are subclassified according to the histamine receptor that they act upon: the two largest classes of antihistamines are H1-antihistamines and H2-antihistamines.
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List of Antihistamines List of Antihistamines. Pharmacist holding a large bottle of antihistamines. Antihistamines have a broad range of functions -- they can ease allergy symptoms, alleviate gastrointestinal complaints, prevent motion sickness and aid in sleep, to name just a few. Antihistamines accomplish these tasks by counteracting histamine, an important protein with diverse effects in the body.
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- As a noun, a drug taken to prevent or treat nausea and vomiting. As, for example, the antihistamine meclizine hydrochloride (Bonine). 2. As an adjective, pertaining to the prevention or treatment of nausea and vomiting.ntiemetics: 1. As a noun, a drug taken to prevent or treat nausea and vomiting. As, for example, the antihistamine meclizine hydrochloride (Bonine). 2. As an adjective, pertaining to the prevention or treatment of nausea and vomiting. Opening a window in a car can have an antiemetic effect.
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- Benadryl is an antihistamine that is available over the counter. It is very effective at treating symptoms of the common cold and allergies such as runny nose, sneezing and itching. Benadryl is also used to treat allergic reactions. However, it tends to make people very drowsy. Active Ingredients in Benadryl.
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Antihistamines: Understanding Your OTC Options Over-the-counter (OTC) medicines are medicines you can buy without a prescription from your doctor. Antihistamines help relieve or prevent allergy symptoms. Two types of OTC antihistamines are available: first-generation and second-generation antihistamines.Both types can be useful for allergies. First-generation antihistamines are also sometimes used in OTC cold medicines.his can cause itching, sneezing, runny nose, and watery eyes. Antihistamines prevent histamines from attaching to your cells and causing symptoms. First-generation antihistamines also work in the part of the brain that controls nausea and vomiting. This is why they can help prevent motion sickness.
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Benadryl Benadryl (diphenhydramine) is an antihistamine, meaning that it blocks the effects of the naturally occurring chemical histamine in the body. Benadryl is used to treat sneezing; runny nose; itching, watery eyes; hives; rashes; itching; and other symptoms of allergies and the common cold.
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Benadryl What is Benadryl? Benadryl is an antihistamine. Diphenhydramine blocks the effects of the naturally occurring chemical histamine in the body. Benadryl is used to treat sneezing; runny nose; itching, watery eyes; hives; rashes; itching; and other symptoms of allergies and the common cold. Benadryl is also used to suppress coughs, to treat motion sickness, to induce sleep, and to treat mild forms of Parkinson's disease.
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Diphenhydramine vs Fexofenadine Diphenhydramine is an antihistamine used to relieve symptoms of allergy, hay fever, and the common cold. These symptoms include rash, itching, watery eyes, itchy eyes /nose/throat, cough, runny nose, and sneezing. It is also used to prevent and treat nausea, vomiting and dizziness caused by motion sickness. Diphenhydramine can also be used to help you relax and fall asleep.
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Anxiolytic An anxiolytic (also antipanic or antianxiety agent)[1] is the medication or other intervention that inhibits anxiety. This effect is in contrast to anxiogenic agents, which increase anxiety.
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Definitions &Translations Antihistamine. An H1 antagonist is a histamine antagonist of the H1 receptor that serves to reduce or eliminate effects mediated by histamine, an endogenous chemical mediator released during allergic reactions.iktionary (0.00 / 0 votes) Rate this definition: antihistamine (Noun). A drug or substance that counteracts the effects of a histamine. Commonly used to alleviate the symptoms of hay fever and other allergies.
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- Milton, WA Demographics. Livability. 1  The population density in Milton is 2483% higher than Washington. 2  The median age in Milton is 2% lower than Washington.  In Milton 83.16% of the population is Caucasian.
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- Cetirizine /sɛˈtɪrɨziːn/ (trade names Zirtec, Zyrtec, Reactine) is a second-generation antihistamine used in the treatment of hay fever, allergies, angioedema, and urticaria.It is a major metabolite of hydroxyzine, and a racemic selective H1 receptor antagonist.n Ireland, cetirizine is known as Zirtek (as well as under generic names), and is available OTC in limited quantities (usually no more than seven tablets per pack). Like many other antihistamine medications, cetirizine is commonly prescribed in combination with pseudoephedrine hydrochloride, a decongestant.
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- As a noun, a drug taken to prevent or treat nausea and vomiting. As, for example, the antihistamine meclizine hydrochloride (Bonine). As an adjective, pertaining to the prevention or treatment of nausea and vomiting. Opening a window in a car can have an antiemetic effect.
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Antihistamine An antihistamine is a type of pharmaceutical drug that opposes the activity of histamine receptors in the body. Antihistamines are subclassified according to the histamine receptor that they act upon: the two largest classes of antihistamines are H1-antihistamines and H2-antihistamines. 1 -antihistamines work by binding to histamine H1 receptors in mast cells, smooth muscle, and endothelium in the body as well as in the tuberomammillary nucleus in the brain; H 2 -antihistamines bind to histamine H2 receptors in the upper gastrointestinal tract, primarily in the stomach.
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- Antihistamines, H1. Histamine antagonists or antihistamines are drugs that relieve allergy symptoms. Histamine is a chemical used to identify and remove substances that trigger an allergic response.
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antihistamine Antihistamine drugs fall into two groups-those that block H 1 receptors and act mainly on blood vessels, and those that block H 2 receptors and act mainly on the secretion of acid in the stomach.
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Antihistamine 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.
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- Antihistamines work by altering the way cells are affected by a substance called histamine. Histamine is a chemical the immune system uses to help protect the body's cells against infection. Usually histamine is a useful substance, but if you're having an allergic reaction it's sometimes necessary to block its effects.
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Latest From Dr. Lisa Â» Ask Dr. Lisa Benadryl, the brand name for the drug diphenhydramine, is one of a class of drugs called antihistamines that are designed to relieve symptoms of allergies and the common cold. It is not a sleep aid, although many people use it for that purpose.
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Antihistamine Antihistamines that target the histamine H1-receptor are used to treat allergic reactions in the nose (e.g., itching, runny nose, and sneezing) as well as for insomnia.n antihistamine is a type of pharmaceutical drug that opposes the activity of histamine receptors in the body.
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ANTIEMETIC Hypernyms (antihistamine is a kind of...): medicament; medication; medicinal drug; medicine ((medicine) something that treats or prevents or alleviates the symptoms of disease) Hyponyms (each of the following is a kind of antihistamine):
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- Answers.com® is making the world better one answer at a time. Zyrtec is an antihistamine taken to help people with allergies. This over the counter drug can take a few hours to a day to get out of a persons system. 2 people found this useful.
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antihistamine [an″te-, an″ti-his´tah-mēn] a drug that counteracts the effects of histamine, a normal body chemical that among its actions is believed to cause the symptoms of persons who are hypersensitive to various allergens.
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- antihistaminenoun [ C or U ] uk ​ /ˌæn.tiˈhɪs.tə.mɪn/ /ˌæn.tiˈhɪs.tə.miːn/ us ​ /ˌæn.t̬iˈhɪs.tə.mɪn/ /ˌæn.t̬iˈhɪs.tə.miːn/. › a type of drug that is used to treat medical conditions caused by an extreme reaction to particular substances: Antihistamine is often used to treat hay fever and insect bites. (Definition of “antihistamine” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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- This medication is an antihistamine that treats symptoms such as itching, runny nose, watery eyes, and sneezing from  hay fever  and other allergies. It is also used to relieve itching from hives.