💊 Uses & Benefits

• Erectile Dysfunction (ED): Enhances ability to achieve and sustain an erection by selectively inhibiting PDE5 and increasing cGMP levels in penile tissues, only effective with sexual stimulation 

• Pulmonary Arterial Hypertension (PAH): Helps lower pulmonary vascular resistance and improve exercise ability (off-label/secondary indication)

📋 Dosage & Administration

• Take 50 mg orally 30 minutes to 1 hour before sexual activity, maximum once daily. May adjust to 25 mg or up to 100 mg depending on response and tolerability 

• For PAH, dose generally 20 mg three times daily, spaced 4–6 hours apart 

• Elderly (>65 years) or patients with hepatic or renal impairment should start at 25 mg, with careful monitoring 

⚠️ Side Effects & Precautions

• Common side effects: Headache (7–16%), flushing, dyspepsia, nasal congestion, dizziness, insomnia, diarrhea, skin rash, and visual disturbances (e.g., blue-green tint) 

• Serious risks: Priapism, cardiovascular events including myocardial ischemia or arrhythmia, hearing loss, and vision loss—especially in patients with underlying heart conditions 

• Drug interactions: Avoid with nitrate medications; CYP3A4 inhibitors (like ketoconazole, erythromycin, ritonavir) can increase sildenafil levels; inducers (e.g. rifampicin) can reduce its effect 

🧪 Product Details & Availability (Bangladesh)

• Generic Name: Sildenafil Citrate

• Strength: 50 mg tablet

• Manufacturer: Square Pharmaceuticals Ltd. 

• Price: Approx. ৳6–30 per tablet; Strip of 5 costs around ৳150 BDT depending on retailer 

• Available nationwide in retail pharmacies and e-pharmacies like Pharmacypoint, MedEx, Arogga, etc.

📋 Quick Overview Table