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Drug reference

avanafil

PDE5 inhibitor

PDE5 inhibitor
CDSCO approved
EXCRETION
not curated
INTERACTIONS
12 major
incl. contraindicated
PREGNANCY
not curated
Top interactionssee all 12
  • Organic NitratesContraindicatedTextbookG&G 14e · p999
  • Isosorbide MononitrateContraindicatedDatabaseDDInter
  • AmprenavirSevereDatabaseDDInter
  • Amyl NitriteSevereDatabaseDDInter

Mechanism

Avanafil inhibits cyclic GMP–selective phosphodiesterase (PDE) 5.

Indications

erectile dysfunctionpulmonary hypertension

Drug interactions

Organic Nitrates
Contraindicated
Textbook

Dangerously low blood pressures.

The administration of PDE5 inhibitors to patients receiving organic nitrates is contraindicated. The patient’s underlying cardiovascular status and concurrent use of hypotensive agents (e.g., nitrates, α adrenergic antagonists) must be considered prior to use of this class of drugs.

Source: G&G 14e · p999

Isosorbide Mononitrate
Contraindicated
Database

Profound and prolonged systemic hypotension, syncope, myocardial ischemia, and even death.

Concomitant use is absolutely contraindicated. A minimum of 12 hours should elapse between the last dose of avanafil and the administration of isosorbide mononitrate.

Source: DDInter

Amprenavir
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Amyl Nitrite
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Aprepitant
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Atazanavir
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Berotralstat
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Boceprevir
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Ceritinib
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Ciprofloxacin
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Clarithromycin
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Cobicistat
Severe
Database

Drug interaction classified as: metabolism

Source: DDInter

Related guidelines

Ask House about avanafil

Continue into a citation-backed clinical answer with the drug context already attached.

Sources: Goodman & Gilman 14e·Verified: 2026-05-10 · House clinical team