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antihistamine |
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antihistamine (ăn'tĭhĭs`təmēn), any one of a group of compounds having various chemical structures and characterized by the ability to antagonize the effects of histamine histamine (hĭs`təmēn') ..... Click the link for more information. . Their principal use in medicine is in the control of allergies such as hay fever and hives. Some antihistamines are also useful as sedatives and for the prevention of motion sickness; others, such as fexofenadine (Allegra) and loratadine (Claritin) are nonsedating. antihistamineSynthetic drug that counteracts the effects of released histamine in the body. Antihistamines compete with histamine at one of the three types of histamine receptors, preventing allergic attacks (see allergy) or inflammation. Some antihistamines also prevent motion sickness and vertigo. Drowsiness is a frequent side effect. H2 antihistamines, which bind to the second receptor type, are used to control gastric-acid secretion (see stomach) and treat peptic ulcers. |
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A Lancaster woman was convicted Wednesday of murdering her toddler son, who was beaten, poisoned with an over-the-counter antihistamine, suffocated and, after he was dead, burned in a tamale pot. TRK-820 is a selective kappa opioid receptor agonist with a novel mechanism of action which differs from that for conventional drugs such as antihistamine, and it is expected that the compound will be effective for treating itching that is resistant to existing therapeutics. Her medical history included allergic rhinitis, which was treated with an antihistamine and nasal steroid spray, and sarcoidosis, which required no treatment. |
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antihistamine
