Sildenafil and Sodium Nitroprusside: Drug Interaction Guide
Quick answer: This is a major interaction — avoid combining Sildenafil and Sodium Nitroprusside unless specifically directed by your doctor.
How Sildenafil interacts with Sodium Nitroprusside
Sildenafil inhibits phosphodiesterase type 5, increasing cGMP signalling, while sodium nitroprusside releases nitric oxide and also increases cGMP. The combination can cause profound hypotension.
What you should do
Avoid concurrent use. If vasodilator therapy is required after sildenafil exposure, manage in a monitored setting with haemodynamic support available.
Key facts
Severity
Major — avoid combination
Mechanism
Sildenafil inhibits phosphodiesterase type 5, increasing cGMP signalling, while sodium nitroprusside releases nitric oxi...
Action
Avoid concurrent use. If vasodilator therapy is required after sildenafil exposure, manage in a monitored setting with h...
Frequently asked questions
Can I take Sildenafil and Sodium Nitroprusside together?
No — this combination should generally be avoided. Avoid concurrent use. If vasodilator therapy is required after sildenafil exposure, manage in a monitored setting with haemodynamic support available.
What is the severity of this interaction?
The interaction between Sildenafil and Sodium Nitroprusside is classified as Major — avoid combination. Sildenafil inhibits phosphodiesterase type 5, increasing cGMP signalling, while sodium nitroprusside releases nitric oxide and also increases cGMP. The combination can cause profound hypotension.
What should I do if I'm prescribed both?
Avoid concurrent use. If vasodilator therapy is required after sildenafil exposure, manage in a monitored setting with haemodynamic support available. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.