Mequitazine - Revision history

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	~~'''Mequitazine''' is a first-generation [[H1 antagonist~~\|~~H1 receptor antagonist]] that is used in the treatment of [[allergy~~\|~~allergic conditions]] such as [[hay fever]], [[urticaria]], and [[asthma]]~~. ~~It is marketed under various brand names including Primalan~~.		{{Short description\|Antihistamine drug}}
			{{Drugbox
			\| verifiedfields = changed
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			\| image = Mequitazine_structure.svg
			\| image2 = Mequitazine_synthesis.svg
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	~~== Pharmacology ==~~		'''Mequitazine''' is a [[medication]] used primarily as an [[antihistamine]] for the treatment of [[allergic reactions]]. It is a member of the [[phenothiazine]] class of drugs, which are known for their [[antihistamine]] and [[anticholinergic]] properties.

	Mequitazine ~~works by~~ blocking the action of [[histamine]], a substance in the body that causes allergic symptoms~~. It is a competitive antagonist at the H1 receptor~~, ~~which means it prevents histamine from binding to this receptor~~ and ~~triggering an allergic response~~.		==Pharmacology==
			Mequitazine functions as a [[histamine H1 receptor]] antagonist. By blocking the action of [[histamine]], a substance in the body that causes allergic symptoms, mequitazine helps alleviate symptoms such as [[sneezing]], [[itching]], and [[runny nose]].

	== ~~Uses~~ ==		===Mechanism of Action===
			Mequitazine works by inhibiting the binding of histamine to the H1 receptor sites on effector cells in the gastrointestinal tract, blood vessels, and respiratory tract. This action prevents the typical allergic response mediated by histamine.

	~~Mequitazine is used to relieve symptoms of allergic conditions such as hay fever, urticaria, and asthma. These symptoms can include~~ [[~~sneezing~~]], [[~~runny nose~~]], ~~[[itchy eyes]], and [[wheezing]]~~. ~~It can also be used to treat~~ [[~~insomnia~~]] ~~due to its sedative effects~~.		==Chemical Structure==
			[[File:Mequitazine_structure.svg\|thumb\|right\|Chemical structure of Mequitazine]]
			Mequitazine is a [[phenothiazine]] derivative, characterized by its tricyclic structure. The presence of a [[sulfur]] atom in the central ring is a distinctive feature of this class of compounds.

	== ~~Side Effects~~ ==		==Synthesis==
			[[File:Mequitazine_synthesis.svg\|thumb\|left\|Synthesis pathway of Mequitazine]]
			The synthesis of mequitazine involves several steps, starting from basic phenothiazine derivatives. The process includes the introduction of specific functional groups that confer its antihistaminic properties.

	~~Common side effects~~ of ~~mequitazine include [[drowsiness]], [[dizziness]]~~, [[~~dry mouth~~]], and [[~~blurred vision~~]]. ~~Less common side~~ effects ~~can include [[nausea]], [[headache]], and [[palpitations]]. In rare cases~~, it ~~can cause [[seizures]] or [[hallucinations]]~~.		==Clinical Use==
			Mequitazine is used in the management of various allergic conditions, including [[allergic rhinitis]] and [[urticaria]]. It is known for its relatively mild sedative effects compared to other antihistamines, making it suitable for daytime use.

	== ~~Contraindications~~ ==		==Side Effects==
			Common side effects of mequitazine include [[drowsiness]], [[dry mouth]], and [[dizziness]]. Due to its anticholinergic effects, it may also cause [[blurred vision]] and [[urinary retention]] in some patients.
	~~Mequitazine should not be used in people with a known hypersensitivity to the drug or any~~ of ~~its components. It should also be used with caution in people with~~ [[~~glaucoma~~]], [[~~prostate problems~~]], or [[~~urinary retention~~]].

	~~== Interactions ==~~

	~~Mequitazine can interact with other medications, including other antihistamines~~, [[~~sedatives~~]]~~, [[tranquilizers]],~~ and [[~~alcohol~~]]. ~~These interactions can increase the sedative effects of mequitazine.~~

	~~== Dosage ==~~

	~~The dosage of mequitazine will depend on the individual and the condition being treated. It is usually taken once or twice a day.~~

	~~== See Also ==~~

			==Related Pages==
	* [[Antihistamine]]		* [[Antihistamine]]
	* [[~~H1 antagonist~~]]		* [[Allergic rhinitis]]
	* [[~~Allergy~~]]		* [[Phenothiazine]]

	~~[[Category:Drugs]]~~
	[[Category:Antihistamines]]		[[Category:Antihistamines]]
	[[Category:~~H1 antagonists~~]]		[[Category:Phenothiazines]]

	~~{{stub}}~~
	~~<gallery>~~
	~~File:Mequitazine structure.svg\|Mequitazine structure~~
	~~File:Mequitazine synthesis.svg\|Mequitazine synthesis~~
	~~</gallery>~~
	~~<gallery>~~
	~~File:Mequitazine structure.svg\|Mequitazine structure~~
	~~File:Mequitazine synthesis.svg\|Mequitazine synthesis~~
	~~</gallery>~~

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			<gallery>
			File:Mequitazine structure.svg\|Mequitazine structure
			File:Mequitazine synthesis.svg\|Mequitazine synthesis
			</gallery>
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	File:Mequitazine structure.svg\|Mequitazine structure		File:Mequitazine structure.svg\|Mequitazine structure
	File:Mequitazine synthesis.svg\|Mequitazine synthesis		File:Mequitazine synthesis.svg\|Mequitazine synthesis
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			<gallery>
			File:Mequitazine structure.svg\|Mequitazine structure
			File:Mequitazine synthesis.svg\|Mequitazine synthesis
			</gallery>

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'''Mequitazine''' is a first-generation [[H1 antagonist|H1 receptor antagonist]] that is used in the treatment of [[allergy|allergic conditions]] such as [[hay fever]], [[urticaria]], and [[asthma]]. It is marketed under various brand names including Primalan.

== Pharmacology ==

Mequitazine works by blocking the action of [[histamine]], a substance in the body that causes allergic symptoms. It is a competitive antagonist at the H1 receptor, which means it prevents histamine from binding to this receptor and triggering an allergic response.

== Uses ==

Mequitazine is used to relieve symptoms of allergic conditions such as hay fever, urticaria, and asthma. These symptoms can include [[sneezing]], [[runny nose]], [[itchy eyes]], and [[wheezing]]. It can also be used to treat [[insomnia]] due to its sedative effects.

== Side Effects ==

Common side effects of mequitazine include [[drowsiness]], [[dizziness]], [[dry mouth]], and [[blurred vision]]. Less common side effects can include [[nausea]], [[headache]], and [[palpitations]]. In rare cases, it can cause [[seizures]] or [[hallucinations]].

== Contraindications ==

Mequitazine should not be used in people with a known hypersensitivity to the drug or any of its components. It should also be used with caution in people with [[glaucoma]], [[prostate problems]], or [[urinary retention]].

== Interactions ==

Mequitazine can interact with other medications, including other antihistamines, [[sedatives]], [[tranquilizers]], and [[alcohol]]. These interactions can increase the sedative effects of mequitazine.

== Dosage ==

The dosage of mequitazine will depend on the individual and the condition being treated. It is usually taken once or twice a day.

== See Also ==

* [[Antihistamine]]
* [[H1 antagonist]]
* [[Allergy]]

[[Category:Drugs]]
[[Category:Antihistamines]]
[[Category:H1 antagonists]]

{{stub}}