https://wikimd.org/index.php?action=history&feed=atom&title=H1_antagonist 2026-04-27T14:27:13Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.org/index.php?title=H1_antagonist&diff=6330554&oldid=prev 2025-02-20T00:40:43Z

<p>CSV import</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 00:40, 20 February 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l50">Line 50:</td> <td colspan="2" class="diff-lineno">Line 50:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{stub}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{stub}}</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">&lt;gallery&gt;</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">File:Antihistamine.svg|H1 antagonist</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">&lt;/gallery&gt;</ins></div></td></tr> </table>

Prab https://wikimd.org/index.php?title=H1_antagonist&diff=5205380&oldid=prev 2024-02-22T03:40:17Z

<p>CSV import</p> <p><b>New page</b></p><div>&#039;&#039;&#039;H1 antagonist&#039;&#039;&#039; is a type of [[drug]] that blocks the action of [[histamine]] at the H1 receptor, effectively reducing the symptoms of [[allergy]] and [[hypersensitivity]] reactions. H1 antagonists are commonly used in the treatment of [[allergic rhinitis]], [[urticaria]], and other allergic reactions.<br /> <br /> == Mechanism of Action ==<br /> <br /> H1 antagonists work by selectively blocking the [[H1 receptor]], a protein found on the surface of certain cells in the body. This receptor is responsible for mediating the effects of histamine, a chemical that is released during an allergic reaction. By blocking the H1 receptor, these drugs prevent histamine from binding to its receptor, thereby reducing the symptoms of an allergic reaction.<br /> <br /> == Types of H1 Antagonists ==<br /> <br /> There are two main types of H1 antagonists: first-generation and second-generation.<br /> <br /> === First-Generation H1 Antagonists ===<br /> <br /> First-generation H1 antagonists, such as [[diphenhydramine]] and [[chlorpheniramine]], are older drugs that are effective at reducing the symptoms of an allergic reaction. However, they can cause side effects such as drowsiness and dry mouth.<br /> <br /> === Second-Generation H1 Antagonists ===<br /> <br /> Second-generation H1 antagonists, such as [[cetirizine]], [[loratadine]], and [[fexofenadine]], are newer drugs that are less likely to cause drowsiness and other side effects. They are also longer acting, meaning they can be taken less frequently.<br /> <br /> == Uses ==<br /> <br /> H1 antagonists are used to treat a variety of conditions, including:<br /> <br /> * [[Allergic rhinitis]]<br /> * [[Urticaria]]<br /> * [[Allergic conjunctivitis]]<br /> * [[Anaphylaxis]]<br /> * [[Pruritus]]<br /> * [[Motion sickness]]<br /> * [[Insomnia]]<br /> <br /> == Side Effects ==<br /> <br /> Like all drugs, H1 antagonists can cause side effects. These may include:<br /> <br /> * Drowsiness<br /> * Dry mouth<br /> * Blurred vision<br /> * Constipation<br /> * Urinary retention<br /> <br /> == See Also ==<br /> <br /> * [[H2 antagonist]]<br /> * [[Histamine]]<br /> * [[Allergy]]<br /> <br /> [[Category:Pharmacology]]<br /> [[Category:Drugs]]<br /> [[Category:Allergy]]<br /> <br /> {{stub}}</div>

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