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抗ヒスタミン薬 （こうヒスタミンやく、Antihistamine）は、 ヒスタミン の作用を抑制する薬品である。. 特に ヒスタミンH 1 受容体 拮抗薬 を指す。. 抗ヒ剤 と略称することもある。. 鼻水といったアレルギー症状や、酔い止めの成分として知られ、花粉症の薬 ...
Mirtazapine is a tetracyclic piperazinoazepine; mianserin was developed by the same team of organic chemists and mirtazapine differs from it via addition of a nitrogen atom in one of the rings. [116] : 429 [117] [118] It is a racemic mixture of enantiomers. The ( S )- (+)-enantiomer is known as esmirtazapine .
antihistamines: Definition Antihistamines are drugs that block the action of histamine (a compound released in allergic inflammatory reactions) at the H 1 receptor sites, responsible for immediate hypersensitivity reactions such as sneezing and itching . Members of this class of drugs may also be used for their side effects, including sedation ...
In common use, the term antihistamine refers only to compounds that inhibit action at the H 1 receptor (and not H 2, etc.). Types H 1 antagonists. Brompheniramine (Dimetane) Cetirizine (Zyrtec) Dimenhydrinate; Diphenhydramine (Benadryl) Doxylamine; Fexofenadine (Allegra) Hydroxyzine (Vistaril) Loratadine (Claritin) Meclizine; H 2 antagonists ...
Rupatadine. Rupatadine is a second generation antihistamine and platelet-activating factor antagonist used to treat allergies. It was discovered and developed by Uriach [ es] [3] and is marketed as Rupafin and under several other trade names.
Peripherally selective drug. Peripherally selective drugs have their primary mechanism of action outside of the central nervous system (CNS), usually because they are excluded from the CNS by the blood–brain barrier. By being excluded from the CNS, drugs may act on the rest of the body without producing side-effects related to their effects ...
Olopatadine. Olopatadine, sold under the brand name Patanol among others, is an antihistamine medication used to decrease the symptoms of allergic conjunctivitis and allergic rhinitis (hay fever). [2] It is used as eye drops or as a nasal spray. [2] The eye drops generally result in an improvement within half an hour.
