what is a antihistamines
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Antihistamine Antihistamines are drugs which treat allergic rhinitis and other allergies. Antihistamines can give relief when a person has nasal congestion, sneezing, or hives because of pollen, dust mites, or animal allergy. Typically people take antihistamines as an inexpensive, generic, over-the-counter drug with few side effects. As an alternative to taking an antihistamine, people who suffer from allergies can instead avoid the substance which irritates them. Antihistamines are usually for short-term treatment.
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Is this a Benadryl hangover? Benadryl (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. Benadryl is used to treat sneezing, runny nose, watery eyes, hives, skin rash, itching, and other cold or allergy symptoms. Benadryl is also used to treat motion sickness, to induce sleep, and to treat certain symptoms of Parkinson's disease.
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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.
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Overview Both Zyrtec and Claritin are members of a class of substances called antihistamines. These medicines are designed to calm the histamine reaction your body has when cells are exposed to an allergen. When your body encounters something to which it is allergic, it sends out white blood cells and goes into fight mode.
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- Doxylamine 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. Antihistamines can cause drowsiness and are sometimes used a sleep aids. Doxylamine is used to treat sneezing, runny nose, watery eyes, hives, skin rash, itching, and other cold or allergy symptoms. Doxylamine is also used as a short-term treatment for sleep problems (insomnia).
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levocetirizine (Xyzal) What is levocetirizine? Levocetirizine 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. Levocetirizine is used to treat symptoms of year-round (perennial) allergies in adults and
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- Antihistamines are a class of medications used to treat many kinds of allergies. As with any medication, there are certain side effects and contraindications associated with the use of antihistamines.ntihistamines are over-the-counter medications used to treat the effects of seasonal, ongoing indoor and acute allergies. Antihistamines relieve such allergy symptoms such as runny or stuffy noses; itchy, water eyes; rashes; sneezing; and congestion.
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- A: Benadryl (diphenhydramine) is an antihistamine that blocks the effects of the naturally occurring chemical histamine in the body. It 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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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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antihistamine The antihistamines are divided into histamine 1 (H 1) and histamine 2 (H 2) blockers, depending on the responses to histamine they prevent. H 1-blocking drugs, such as alkylamines, ethanolamines, ethylenediamines, and piperazines, are effective in the symptomatic treatment of acute allergies.
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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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Oral Antihistamines Many different brands and forms of oral antihistamines are available over the counter (OTC). Oral antihistamines are available as pills, chewable tablets, orally disintegrating tablets, capsules, and liquid. Some antihistamines are found in combination pills that contain other medications. For example, antihistamines are commonly combined with decongestants (for example, Claritin-D, Zyrtec-D, Allegra-D), a class of medicine that is used to dry up the nasal passages and relieve head congestion.
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levocetirizine Levocetirizine 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. Levocetirizine is used to treat symptoms of year-round (perennial) allergies in adults and children who are at least 6 months old.
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Oral Antihistamines 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.
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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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Antihistamines, Decongestants, and Cold Remedies Histamine is an important body chemical that is responsible for the congestion, sneezing, runny nose, and itching that a patient suffers with an allergic attack or an infection. Antihistamine drugs block the action of histamine, therefore reducing these symptoms.
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- Antihistamine. Antihistamine with sedative properties. Used for treating. sneezing, watery & itchy eyes, runny nose, hives, rash, itching. sneezing, watery eyes, runny nose, hives, rashes, itching, coughs. sneezing, runny nose, itchy watery eyes, hives, rashes, itching. seasonal allergic rhinitis, hives, insomnia.
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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. These conditions may include: The common cold
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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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Antihistamines PROMETHAZINE is an antihistamine. It is used to treat allergic reactions and to treat or prevent nausea and vomiting from illness or motion sickness. It is also used to make you sleep before surgery, and to help treat pain or nausea after surgery.
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Antihistamines: Understanding Your OTC Options This 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.ntihistamines 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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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 and How They're Used 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.
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- Hydroxyzine. 1  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. 2  Add Benadryl review.