| Drug Name: | Viagra |
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| Drug Class: | Phosphodiesterase type 5 (PDE5) inhibitor |
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| Mechanism of Action: | Inhibits the enzyme PDE5, leading to increased blood flow to the penis |
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| Use: | - Treatment of erectile dysfunction (ED)
- Treatment of pulmonary arterial hypertension (PAH)
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| Side Effects: | - Headache
- Flushing
- Indigestion
- Nasal congestion
- Impaired vision
- Priapism (prolonged erection)
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| Contraindications: | - Concomitant use with nitrates or nitric oxide donors
- Severe hepatic impairment
- Hypersensitivity to sildenafil or any component of the formulation
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| Specialty: | |
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