what does antihistamine mean
236857fc15b6503d7afb4ae92041e4bc
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.n H3-antihistamine is a classification of drugs used to inhibit the action of histamine at the H3 receptor. H 3 receptors are primarily found in the brain and are inhibitory autoreceptors located on histaminergic nerve terminals, which modulate the release of histamine.
439f1d8d33f8e301a19ae28a464ed1ae
Oral Antihistamines (A second type of antihistamine is used primarily for suppressing acid production in the stomach and treating acid-related diseases such as ulcers of the stomach. These antihistamines will not be discussed further.) Antihistamines also may be used to treat motion sickness, insomnia (difficulty sleeping), and anxiety. Antihistamines work by blocking the effects of a chemical called histamine that is responsible for many allergic symptoms. Patients who experience significant allergic symptoms regularly may take daily antihistamines to keep their symptoms under control.
aef18aa534db3a1429e3c589919230a2
Antihistamines Antihistamines are commonly used: To relieve the symptoms associated with hay fever (seasonal allergic rhinitis). These can include: Inflammation of the nose and eyes (rhinitis and conjunctivitis) Sneezing. Itching of the eyes, nose and throat.
fa657f6b4c47d66c3913b01c472aa1a2
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.
83abaec0212f087e3bbbb56a31fc8b2d
- an•ti•cho•lin•er•gic. 1. of or pertaining to a substance that opposes the effects of acetylcholine; interfering with the passage of parasympathetic nerve impulses. 2. an anticholinergic substance, as a drug.oun. 1. anticholinergic-a substance that opposes or blocks the action of acetylcholine. anticholinergic drug. medicament, medication, medicinal drug, medicine - (medicine) something that treats or prevents or alleviates the symptoms of disease.
a2ebc073bf48b9176f0abf0290cc6d24
ANTIHISTAMINE Benadryl; diphenhydramine (antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness) Dimetapp (trade name for a drug containing an antihistamine and a decongestant; used to relieve nasal congestion and to treat rhinitis)
11be46fa6a163e86e7d36cb12bf83b57
Antihistamines and How They're Used Histamine is a chemical that is normally produced in the body and stored in allergic cells, such as mast cells and basophils. In people with allergies, histamine is released from these cells in a response to allergens. Histamine binds to the histamine receptor, which is present on various cells in the body, and results in allergic symptoms such as sneezing, itchy eyes, itchy nose, hives, or even anaphylaxis. Antihistamines are medications that block the receptor for histamine, thereby stopping the symptoms that histamine causes.
d1e04cc5e4a098869fd4cf2144683b6a
Description and Brand Names Descriptions. Antihistamines are used to relieve or prevent the symptoms of hay fever and other types of allergy. They work by preventing the effects of a substance called histamine, which is produced by the body. Histamine can cause itching, sneezing, runny nose, and watery eyes.
0d20a4dfa8768752fbd7120468ff62bd
- 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.
95fc789750b5e4f602d311fe26398531
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.
03c5a9b7236b13e7bc6396ba1d49521f
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.
4eb96f3f9b5001a5282beae8e39e64f4
English To Hindi The next category of medicines is antihistamines, which block a chemical called histamine that is released by the body during an allergic reaction.
94edd969cb83174eb22eafe478df42d7
- Antihistamines are commonly prescribed to treat symptoms caused by allergies. They are considered relatively safe even for self-treatment, which is why they are readily available as over-the-counter medication. There are, however, antihistamine side effects that every patient must be aware of.he most common antihistamine side effects is drowsiness and is quite common with medications such as chlorphenamine and promethazine. They are, in fact, formulated to help the patient fall asleep.
8e26182debe44159f4dc411e61be6f52
ANERGY ANERGY Dictionary entry overview: What does anergy mean? • ANERGY (noun) The noun ANERGY has 2 senses: 1. reduction or lack of an immune response to a specific antigen 2. inactivity and lack of energy Familiarity information: ANERGY used as a noun is rare.
9ff4768c0011724297ff5d3bb096ece6
Levocetirizine: Oral tablet 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. Histamine antagonists or antihistamines are drugs that relieve allergy symptoms. There are four histamine receptors &#40;designated H<sub>1</sub>, H<sub>2</sub>, H<sub>3</sub>, H<sub>4</sub>&#41;.
6ea35579be3e930b67a62dc8116ef445
Antihistamines Antihistamines. Antihistamines are medicines that can be used to relieve severe itching and help break the itch-scratch-itch cycle in eczema. Find out how they work and what different types are there?
55c27e50759e207412d5360f99aa0e4b
Causation Of Hair Loss 2 Comments ». Excessive hair loss isn’t only a male pattern – it can affect women, teenagers and even babies. Although a certain amount is normal sometimes it can suggest that something is wrong somewhere in your body.
1f29162e14665a56ee296088b1b2c079
Benadryl: Topical cream 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.
95263a7132e255b3ab79d35af10bb4b0
Benadryl 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.ses. 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.
6191110c7a9107a17cfc488c87a4741e
ANTIHISTAMINE Benadryl; diphenhydramine (antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness). Dimetapp (trade name for a drug containing an antihistamine and a decongestant; used to relieve nasal congestion and to treat rhinitis).enadryl; diphenhydramine (antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness). Dimetapp (trade name for a drug containing an antihistamine and a decongestant; used to relieve nasal congestion and to treat rhinitis).
c090a2bc9893dce48e21c6c41409f07b
- Meaning of “antihistamine” in the English Dictionary. See all translations. 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.
e5202e7c548a0aa139c082aa5c3b53e6
XOLAIR Has Been Shown to Help Relieve CIU Symptoms Antihistamines are mainly used to treat hay fever (seasonal allergic rhinitis), hives (urticaria), itching (pruritus) and insect bites and stings. They may be used to help reduce feeling sick (nausea) and being sick (vomiting). They may also be used in the emergency treatment of a severe allergic reaction (anaphylaxis).
15402b8fa90669c48afe330b56baea13
Allegra Allegra is in a class of medications known as antihistamines, which stop the effects of histamine, a substance in your body that causes allergic symptoms by blocking the histamine receptor known as the H1 receptor. Allegra causes less drowsiness than other antihistamines.It can help alleviate symptoms such as runny nose and sneezing; red, watery, or itchy eyes; itchy nose, throat or roof of the mouth; or itchy skin and rash. Allegra comes in tablet and liquid form.llegra is in a class of medications known as antihistamines, which stop the effects of histamine, a substance in your body that causes allergic symptoms by blocking the histamine receptor known as the H1 receptor. Allegra causes less drowsiness than other antihistamines.
18c7b438eabaa4cf3840bd7772b4a149
anticholinergic an•ti•cho•lin•er•gic. 1. of or pertaining to a substance that opposes the effects of acetylcholine; interfering with the passage of parasympathetic nerve impulses. 2. an anticholinergic substance, as a drug.. anticholinergic-a substance that opposes or blocks the action of acetylcholine. anticholinergic drug. medicament, medication, medicinal drug, medicine - (medicine) something that treats or prevents or alleviates the symptoms of disease.
05bd002962c1641a2ffa2d70867b584b
Do I Need Antihistamines for Allergies? How Antihistamines Treat Allergies. When your body comes into contact with whatever your allergy trigger is -- pollen, ragweed, pet dander, or dust mites, for example -- it makes chemicals called histamines. They cause the tissue in your nose to swell (making it stuffy), your nose and eyes to run, and your eyes, nose, and sometimes mouth to itch.
2c67f148ba349a96904e1e3c48497a2f
- 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.