For treatment of erectile dysfunction in men. Works by increasing penile blood flow during sexual stimulation.
Dosage & Administration
- Starting dose: 50mg taken 1 hour before sexual activity
- Dose range: 25-100mg as needed
- Max frequency: Once daily
- Take with/without food (avoid high-fat meals)
- Onset: 30-120 minutes
- Duration: 4-6 hours
Contraindications
Do NOT use if:
- Allergic to sildenafil
- Taking nitrates (including "poppers")
- Recent heart attack/stroke (<6 months)
- Severe heart/liver disease
- Retinitis pigmentosa
- Low blood pressure (<90/50 mmHg)
Important Safety Information
Serious risks:
- Priapism (>4 hour erection) - seek immediate help
- Sudden vision/hearing loss
- Cardiovascular events
- Severe allergic reactions
Common side effects:
- Headache
- Flushing
- Nasal congestion
- Indigestion
- Visual disturbances
Drug Interactions
Dangerous combinations:
- Nitrates (absolute contraindication)
- Other ED medications
- Alpha-blockers
- HIV protease inhibitors
- Strong antifungals
Use caution with:
- Alcohol
- Grapefruit juice
- Blood pressure medications
Storage
- Room temperature (15-30°C/59-86°F)
- Away from light/moisture
- Keep out of children's reach
Patient Advice
- Requires sexual stimulation to work
- Does not prevent STDs/pregnancy
- Report any erection >4 hours immediately
- Avoid hazardous activities if dizzy
- Elderly patients may need dose adjustment
Note: This medication requires prescription and medical supervision. Not for use in women or children.