Synthetic progestin (emergency contraception)
Levonorgestrel with kidney impairment: dosing and safety
Kidney function affects how the body clears Levonorgestrel (Levonorgestrel) and many of its metabolites. For people with chronic kidney disease, dialysis, or even mild renal impairment from age or comorbidities, the standard 1.5mg dose may need adjustment. This page summarises the practical principles for Levonorgestrel in renal impairment.
Why renal function matters for Levonorgestrel
A meaningful fraction of Levonorgestrel or its active metabolites is cleared by the kidneys for many medications. Reduced eGFR slows clearance, raises plasma concentrations and prolongs effect. In emergency contraception, levonorgestrel works primarily by delaying or inhibiting ovulation when taken before the LH surge. The prescribing information for Levonorgestrel 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 Levonorgestrel 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 Levonorgestrel effects unpredictably and may warrant a temporary hold at 1.5mg.
Frequently asked questions
Is Levonorgestrel safe with kidney problems? ▾
Mild to moderate kidney impairment usually allows Levonorgestrel at adjusted lower 1.5mg 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 Levonorgestrel if I have kidney disease? ▾
Yes — periodic eGFR and electrolyte monitoring is the standard practice for Levonorgestrel in chronic kidney disease. Frequency depends on the severity of impairment and on Levonorgestrel-specific risks. The prescriber sets the schedule.
Products containing Levonorgestrel
More on Levonorgestrel
- With alcoholLevonorgestrel and alcohol — is it safe to drink?
- With foodShould Levonorgestrel be taken with food?
- Side effectsLevonorgestrel side effects: common, rare and warning signs
- Dosage guideLevonorgestrel dosage guide: how much to take and when
- OnsetHow fast does Levonorgestrel start working?
- DurationHow long does Levonorgestrel last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.