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Renal insufficiency due to longstanding TB disease itself, previous use of aminoglycosides or concurrent renal disease is not uncommon and great care should be taken in the administration of second-line drugs in such patients. ​

 

Drugs that might require a dose or interval adjustment when there is mild to moderate renal impairment are Ethambutol (E) and Levofloxacin (Lfx).​ In cases with severe renal impairment, Lfx can be replaced with a normal dose of Moxifloxacin (Mfx) (200/400 mg/kg).​ 

 

The table below shows the dosage requirements for drugs in the shorter oral Bedaquiline (Bdq)-containing Multidrug-resistant (MDR)/ Rifampicin-resistant TB (RR-TB) regimen.

 

Table: Drugs that may require dose adjustments in multidrug and extensively drug-resistant regimens

DRUG​

RECOMMENDED DOSE AND FREQUENCY FOR PATIENTS WITH CREATININE​ CLEARANCE <30 ML/MIN OR FOR PATIENTS RECEIVING HAEMODIALYSIS ​(UNLESS OTHERWISE INDICATED DOSE AFTER DIALYSIS)​

Isoniazid​

No adjustment necessary​

Pyrazinamide​

25-35 mg/kg per dose three times per week (not daily)​

Ethambutol​

15-25 mg/kg per dose three times per week (not daily)​

Levofloxacin

750-1000 mg per dose three times per week (not daily)​

Moxifloxacin​

No adjustment necessary​

Ethionamide​

No adjustment necessary

Clofazimine​

No adjustment necessary​

Bedaquiline No dosage adjustments required in patients with mild to moderate renal impairment (dosing not established in severe renal impairment, use with caution) 

Estimated creatinine clearance calculations: ​

Men: Ideal Body Weight (kg) X (140 – age) / 72 X serum creatinine (mg/dl) ​

Women: 0 85 X Ideal Body Weight (kg) X (140 – age) / 72 X serum creatinine (mg/dl)​

 

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