Restoril with kidney impairment: dosing and safety
Kidney function affects how the body clears Restoril (Temazepam) and many of its metabolites. For people with chronic kidney disease, dialysis, or even mild renal impairment from age or comorbidities, the standard 7.5mg, 15mg, 22.5mg, 30mg dose may need adjustment. This page summarises the practical principles for Restoril in renal impairment.
Why renal function matters for Restoril
A meaningful fraction of Temazepam or its active metabolites is cleared by the kidneys for many medications. Reduced eGFR slows clearance, raises plasma concentrations and prolongs effect. Temazepam binds the benzodiazepine site of the GABA-A receptor and allosterically enhances inhibitory chloride conductance. The prescribing information for Temazepam 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 Restoril 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 Restoril effects unpredictably and may warrant a temporary hold at 7.5mg, 15mg, 22.5mg, 30mg.
Frequently asked questions
Is Restoril safe with kidney problems? ▾
Mild to moderate kidney impairment usually allows Restoril at adjusted lower 7.5mg, 15mg, 22.5mg, 30mg 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 Restoril if I have kidney disease? ▾
Yes — periodic eGFR and electrolyte monitoring is the standard practice for Restoril in chronic kidney disease. Frequency depends on the severity of impairment and on Temazepam-specific risks. The prescriber sets the schedule.
More on Restoril
- With alcoholRestoril and alcohol — is it safe to drink?
- With foodShould Restoril be taken with food?
- Side effectsRestoril side effects: common, rare and warning signs
- Dosage guideRestoril dosage guide: how much to take and when
- OnsetHow fast does Restoril start working?
- DurationHow long does Restoril last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.