PDE5 inhibitor
Sildenafil Citrate with kidney impairment: dosing and safety
Kidney function affects how the body clears Sildenafil Citrate (Sildenafil Citrate) and many of its metabolites. For people with chronic kidney disease, dialysis, or even mild renal impairment from age or comorbidities, the standard 100mg, 50mg, 25mg dose may need adjustment. This page summarises the practical principles for Sildenafil Citrate in renal impairment.
Why renal function matters for Sildenafil Citrate
A meaningful fraction of Sildenafil Citrate or its active metabolites is cleared by the kidneys for many medications. Reduced eGFR slows clearance, raises plasma concentrations and prolongs effect. Sildenafil citrate selectively inhibits phosphodiesterase type 5 (PDE5), an enzyme that breaks down cyclic guanosine monophosphate in the corpus cavernosum. The prescribing information for Sildenafil Citrate usually specifies dose adjustments by eGFR threshold (e.g. 30–60 vs <30 mL/min/1.73m²).
Practical guidance
According to the prescribing information, baseline kidney function should be checked before starting Sildenafil Citrate and periodically during treatment. People on dialysis need specialist input on dose timing relative to dialysis. Acute kidney injury — from dehydration, infection or other medications — can shift Sildenafil Citrate effects unpredictably and may warrant a temporary hold at 100mg, 50mg, 25mg.
Frequently asked questions
Is Sildenafil Citrate safe with kidney problems? ▾
Mild to moderate kidney impairment usually allows Sildenafil Citrate at adjusted lower 100mg, 50mg, 25mg doses with monitoring. Severe impairment (eGFR <30) often requires substantial reduction or alternative therapy. The prescriber decides based on lab results and the indication.
Do I need lab tests on Sildenafil Citrate if I have kidney disease? ▾
Yes — periodic eGFR and electrolyte monitoring is the standard practice for Sildenafil Citrate in chronic kidney disease. Frequency depends on the severity of impairment and on Sildenafil Citrate-specific risks. The prescriber sets the schedule.
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More on Sildenafil Citrate
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- Dosage guideSildenafil Citrate dosage guide: how much to take and when
- OnsetHow fast does Sildenafil Citrate start working?
- DurationHow long does Sildenafil Citrate last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.