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Drug reference

methoxamine

Selective α1 agonist · Pressor agent

Selective α1 agonistPressor agent
CDSCO approved
EXCRETION
not curated
INTERACTIONS
12 major
SEVERE in our sources
PREGNANCY
not curated
Top interactionssee all 12
  • AmitriptylineSevereDatabaseDDInter
  • AmoxapineSevereDatabaseDDInter
  • ClomipramineSevereDatabaseDDInter
  • DesipramineSevereDatabaseDDInter

Mechanism

Methoxamine is a selective α1 agonist with no β actions and weak β blocking action. It closely resembles phenylephrine.

Indications

Pressor agent

Dosing

Adult
10–20 mg i.m.; 3–5 mg slow i.v. inj

Drug interactions

Amitriptyline
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Amoxapine
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Clomipramine
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Desipramine
Severe
Database

Clinical effect not specified

Source: DDInter

Dihydroergotamine
Severe
Database

Clinical effect not specified

Source: DDInter

Doxepin
Severe
Database

Clinical effect not specified

Source: DDInter

Ergotamine Tartrate
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Imipramine
Severe
Database

Clinical effect not specified

Source: DDInter

Linezolid
Severe
Database

Clinical effect not specified

Source: DDInter

Methylergometrine
Severe
Database

Clinical effect not specified

Source: DDInter

Methysergide
Severe
Database

Clinical effect not specified

Source: DDInter

Nortriptyline
Severe
Database

Clinical effect not specified

Source: DDInter

Related guidelines

Ask House about methoxamine

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Sources: KD Tripathi 7e·Verified: 2026-05-10 · House clinical team