definition of antihistamine
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DIMETANE • ANTIHISTAMINE (noun) The noun ANTIHISTAMINE has 1 sense: 1. a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site. Familiarity information: ANTIHISTAMINE used as a noun is very rare.
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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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Experian Data Quality Tools FAQ NCOA stands for National Change of Address data that comes from the USPS. Experian Data Quality offers an NCOALink® service which matches names and addresses in an existing database to the NCOALink® file. If a match is found within the file, Experian Data Quality will update the entry with the current address.
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antihistamines Antihistamines provide their primary action by blocking histamine H1 at the receptor site. They have no effect on rate of histamine release, nor do they inactivate histamine.
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Antihistamines: Understanding Your OTC Options 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.
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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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Allerclear Kirkland Non-Drowsy - Lortadine Tablets, (10 mg) Antihistamine, 300 Count Tablets Loratadine is an antihistamine that is used for typical allergy symptoms, such as a stuffy or runny nose, itchy watery eyes, scratchy throat (due to allergies), and rashes, itching, and hives.
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Antihistamines (Systemic) Conjunctivitis, allergic (prophylaxis and treatment)—Antihistamines are indicated in the prophylactic and symptomatic treatment of perennial and seasonal allergic rhinitis , vasomotor rhinitis , and allergic conjunctivitis due to inhalant allergens and foods.{02} {12} {13}{48}.
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Definitions &Translations Definitions for antipruritic. Here are all the possible meanings and translations of the word antipruritic. Princeton's WordNet(0.00 / 0 votes)Rate this definition: antipruritic(noun) a substance that relieves or prevents itching.
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Antihistamines and How They're Used Antihistamines are frequently used for the treatment of other allergic conditions, although they may not be as effective as they are for hay fever and hives. 1  These conditions may include: 2  The common cold. 3  Itching of the skin (pruritus) 4  Insect stings and bites. 5  Allergic reactions to medications. 6  Anaphylaxis.
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loratadine antihistamine. Any substance that reduces the effect of histamine or blocks histamine receptors, usually the histamine 1 (H1) receptor. It is used in the treatment of allergic conjunctivitis and also in the temporary relief of minor allergic symptoms of the eye. Common agents include antazoline sulfate, azelastine hydrochloride, cetirizine, chlorphenamine, emedastine, epinastine hydrochloride, ketotifen, levocabastine, loratadine and olopatadine.
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Medical Definition of Antihistamines Antihistamines: Drugs that combat the histamine released during an allergic reaction by blocking the action of the histamine on the tissue.Antihistamines do not stop the formation of histamine nor do they stop the conflict between the IgE and antigen.ntihistamines: Drugs that combat the histamine released during an allergic reaction by blocking the action of the histamine on the tissue.
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antihistamine Definition of antihistamine. : any of various compounds that counteract histamine in the body and that are used for treating allergic reactions (such as hay fever) and cold symptoms.
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Antihistamine Antihistamine - Related agents. 1  Inhibit the action of histidine decarboxylase... 2  Tritoqualine. 3  Mast cell stabilizers are drugs which prevent mast cell degranulation. 4  cromolyn sodium. 5  Nedocromil. 6  β-agonists.
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Do I Need Antihistamines for Allergies? Sometimes you may also get an itchy rash on your skin, called hives. Antihistamines reduce or block histamines, so they stop allergy symptoms. Antihistamines work well to relieve symptoms of different types of allergies, including seasonal (hay fever), indoor, and food allergies, but they can't relieve every symptom. To treat nasal congestion, your doctor may recommend taking a decongestant.
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Glossary Histamine. Histamine is a chemical the immune system uses to help protect the body's cells against infection. The immune system is the body's natural defence against illness and infection.If the immune system detects a harmful foreign object, such as bacteria or a virus, it will release histamine into nearby cells.eceptors. Receptors are molecules found in the cell membranes. They react when they come into contact with certain substances. Antihistamines work by blocking the receptors in each cell, so histamine can't activate the receptors and affect the cell.
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- Antihistamines are a type of medicine often used to treat a number of allergic health conditions. Although antihistamines can't cure these conditions, they often provide relief from symptoms. For example, antihistamines may be used to treat: hay fever.
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Overdosing on an Antihistamine Antihistamine Overdose. Antihistamines are a group of drugs often used to treat allergy related conditions. Although the drugs often do not cure the condition, they work to provide relief to those who take them by lessening the intensity of the symptoms they experience.
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HYDROXYZINE antianxiety drug, anxiolytic, anxiolytic drug, minor tranquilizer, minor tranquilliser, minor tranquillizer. a tranquilizer used to relieve anxiety and reduce tension and irritability.
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- The antihistamines are widely used to treat symptoms of allergic conditions including itching, nasal stuffiness, runny nose, teary eyes, urticaria, dizziness, nausea and cough. Their most common use alone or in combination with other agents is for symptoms of upper respiratory illnesses such as the common cold.
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Intuniv For ADHD: Dosing Details An antihistamine is a type of drug used to fight allergic reactions. In a severe allergic reaction, an antihistamine can save...
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Antihistamine H 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.n antihistamine is a type of pharmaceutical drug that opposes the activity of histamine receptors in the body.
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- Antihistamines are a type of medicine that's often used to treat a number of allergic health conditions. Although antihistamines can't cure these conditions, they often provide relief from symptoms. For example, antihistamines may be used to treat: hay fever. allergic rhinitis – inflammation of the nose due to an allergic reaction to substances such as dust mites.
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- Diphenhydramine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Diphenhydramine is used to treat sneezing, runny nose, watery eyes, hives, skin rash, itching, and other cold or allergy symptoms. Diphenhydramine is also used to treat motion sickness, to induce sleep, and to treat certain symptoms of Parkinson's disease.
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Medical Dictionary Brompheniramine is an antihistamine that reduces the effects of the natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex. Phenylephrine is a decongestant that shrinks blood vessels in the nasal passages.
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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.