Sildenafil Tablet: Uses, Dosage & Side Effects in Pakistan

Sildenafil Tablet Uses, Dosage, Side Effects & Price in Pakistan

1. Quick Info (Mukhtasir Maloomat)

2. What is Sildenafil Tablet? (Sildenafil Tablet kya hai)

Sildenafil is a PDE5 inhibitor that treats Erectile Dysfunction (mardana kamzori) and, at different doses, Pulmonary Arterial Hypertension (PAH). The brand name Viagra (Pfizer) is the most widely recognized; multiple local Pakistani generic versions are also available.

How it works: Sildenafil inhibits phosphodiesterase type 5 (PDE5), which increases cyclic GMP (cGMP) in penile smooth muscle, causing relaxation and increased blood flow — enabling an erection. It requires sexual stimulation to work — it does not cause erections on its own.

Critical safety notes: 1. ABSOLUTE CONTRAINDICATION with nitrates (heart medicines like GTN spray, Sorbitrate, isosorbide) — can cause sudden, severe, potentially fatal blood pressure drop. 2. COUNTERFEIT WARNING: Many fake Viagra/sildenafil tablets are sold in Pakistan — only buy from licensed pharmacies with a valid prescription.

3. Uses (Fayde / Kis kaam aati hai)

• Erectile Dysfunction (ED — mardana kamzori)
• Pulmonary Arterial Hypertension (PAH — specialist indication, different dosing)

4. Who May Use It (Kis ko leni chahiye)

A healthcare professional should confirm that the indication, age and exact formulation match the patient’s needs. An ingredient match alone does not make another brand or formulation interchangeable.

5. When Not to Use (Kab nahi leni chahiye)

• ABSOLUTE CONTRAINDICATION with nitrates (GTN, isosorbide mononitrate/dinitrate) — can cause fatal hypotension
• Caution with alpha-blockers — orthostatic hypotension risk
• Cardiovascular risk — patients with active cardiac disease, recent MI/stroke: consult cardiologist first
• COUNTERFEIT WARNING: Many fake Sildenafil/Viagra tablets sold in Pakistan — only buy from licensed pharmacies with valid prescription
• Vision changes: stop immediately and seek care if sudden vision loss (NAION)
• Hearing loss: stop immediately if sudden hearing loss or tinnitus

6. Dosage (Kitni leni hai)

Adult guidance

The Sildenafil dose and duration must be selected for the diagnosed condition, exact formulation and kidney or liver function. This page does not establish a single starting or maximum dose for every patient.

Child guidance

NOT for use in children — PAH dosing in children is strictly specialist-only

Dose limits

Use the limit specified for your exact product and individual prescription. A strength printed on a pack is not automatically a recommended dose.

7. How to Use (Kaise leni hai)

Check the medicine name, strength and instructions before each course. Do not share a prescription or change its dose, duration or formulation without professional advice.

8. Timing (Kab leni chahiye)

Check the local leaflet or ask a pharmacist about food timing for this exact formulation; do not infer it from another medicine.

9. Missed Dose (Dose chhoot jaye)

Follow the exact leaflet or contact a pharmacist for missed-dose instructions. Do not double a dose or change a tapering or monitored treatment plan yourself.

10. Warnings (Ihtiyat)

• ABSOLUTE CONTRAINDICATION with nitrates (GTN, isosorbide mononitrate/dinitrate) — can cause fatal hypotension
• Caution with alpha-blockers — orthostatic hypotension risk
• Cardiovascular risk — patients with active cardiac disease, recent MI/stroke: consult cardiologist first
• COUNTERFEIT WARNING: Many fake Sildenafil/Viagra tablets sold in Pakistan — only buy from licensed pharmacies with valid prescription
• Vision changes: stop immediately and seek care if sudden vision loss (NAION)
• Hearing loss: stop immediately if sudden hearing loss or tinnitus

11. Precautions (Ahm ehtiyaat)

Check allergies, pregnancy or breastfeeding, kidney and liver conditions, and all other medicines with the prescriber or pharmacist. Store according to the local pack and keep out of reach of children. Below 30°C. Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

12. Side Effects (Nuksanat)

Reported effects

• Headache (most common)
• Flushing (redness of face)
• Dyspepsia (indigestion)
• Nasal congestion
• Visual colour tinge (bluish/blueish-green hue)
• Dizziness

Serious effects and warning symptoms

• Severe hypotension (with nitrates — can be fatal — EMERGENCY)
• Priapism (painful erection lasting >4 hours — EMERGENCY — permanent damage if not treated promptly)
• NAION (non-arteritic anterior ischaemic optic neuropathy — sudden vision loss — EMERGENCY)
• Sudden hearing loss or severe tinnitus (EMERGENCY)

These lists do not establish the frequency of an effect or prove that a new symptom is caused by this medicine. Persistent or worsening symptoms need assessment.

13. Interactions (Dawaon ke sath reaction)

Nitrates (GTN, isosorbide — ABSOLUTE CONTRAINDICATION — fatal hypotension); Alpha-blockers (orthostatic hypotension — use with caution); Ritonavir / HIV protease inhibitors (increase sildenafil levels significantly — dose reduction required); Antifungals (itraconazole, ketoconazole — increase sildenafil levels)

14. When to Get Help (Kab doctor se milein)

Seek emergency help for difficulty breathing, swelling of the face or throat, collapse, severe bleeding or suspected overdose. For the medicine-specific warning symptoms above, contact a clinician promptly. Bring the pack and a list of medicines.

15. Alternatives (Dusri dawaein)

Ask a pharmacist to compare the exact ingredients, strength, route and release type. A generic name alone does not prove dose equivalence. Do not substitute a combination product for a single-ingredient treatment.

16. Price in Pakistan (Price kitni hai)

A current price matched to the local strength and pack size has not been verified. Confirm the printed price, pack and expiry with a licensed pharmacy.

17. FAQs (Aksar poochay jane walay sawalat)

Q: Sildenafil Tablet kis kaam aati hai?

A: Sildenafil Tablet contains Sildenafil. Erectile Dysfunction (ED — mardana kamzori); Pulmonary Arterial Hypertension (PAH — specialist indication, different dosing). The diagnosis and exact product determine suitability.

Q: Dose kaise confirm karein?

A: The Sildenafil dose and duration must be selected for the diagnosed condition, exact formulation and kidney or liver function. This page does not establish a single starting or maximum dose for every patient.

Q: Bachon ke liye dose kya hai?

A: NOT for use in children — PAH dosing in children is strictly specialist-only

Q: Pakistan mein price kitni hai?

A: A current price matched to the local strength and pack size has not been verified. Confirm the printed price, pack and expiry with a licensed pharmacy.

Q: Nuksanat hon to kya karein?

A: Reported effects include Headache (most common); Flushing (redness of face); Dyspepsia (indigestion). Seek medical help for Severe hypotension (with nitrates — can be fatal — EMERGENCY); Priapism (painful erection lasting >4 hours — EMERGENCY — permanent damage if not treated promptly). A symptom list does not predict how often an effect occurs.

18. Editorial Information (Medical jaiza)

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-10-15

This correction adds ingredient-specific sources and separates verified facts from unverified local pack details. The recorded medical-review date is unchanged; this editorial correction is not a new clinician review. Foreign labels inform ingredient safety and do not establish Pakistani registration or every local pack’s instructions.

19. Disclaimer (Zaroori tanbeeh)

Educational information only. Confirm the diagnosis, local leaflet and individual prescription with a qualified clinician or pharmacist before starting, stopping or changing treatment.