That’s a good question — whether Malegra 120 (i.e. a 120 mg dose of Sildenafil) could be suitable to treat erectile dysfunction (ED) after surgery depends a lot on the type of surgery, your overall health, and when you plan to start using it. Here’s what general medical sources say — and what to check carefully.  What you must check / be cautious about when using Sildenafil after surgery Sildenafil affects blood vessels and lowers blood pressure a bit (vasodilation). For people who had surgery — especially involving heart/blood vessels, or if under anaesthesia recently — this can be risky. Practo +2 NCBI +2 If you are still on medications (for heart disease, blood pressure, etc.), or taking nitrate-based drugs — combining these with Sildenafil can cause dangerous drops in blood pressure. Medicines.org.uk +2 MedlinePlus +2 Sildenafil can have side effects: headaches, dizziness, irregular blood pressure, rare risks to vision/hearing, and in rare cases prolonged erection (priapism) — which can be more concerning when the body is still recovering. MedlinePlus +2 NCBI +2 The success after surgery depends heavily on type of surgery, extent of nerve/vascular damage, overall health, and time since surgery. It’s not guaranteed to work. Prostate Cancer UK +2 promenshealthcare.com  What you should do now (if you consider using it) Consult your surgeon / urologist (or the doctor who managed your sur gery) — tell them exactly what surgery you had, when, and your current health & medications. Ask if a “penile rehabilitation” program (with PDE‑5 inhibitor) is appropriate for you — and when it would be safe to start (some recommend waiting several weeks). If they approve, use a lower dose initially if advised, monitor for side effects (blood pressure drop, vision/hearing changes, prolonged erection), and avoid mixing with risky medicines (like nitrates). Avoid self‑medicating — because post-surgery body is more vulnerable.