Adult

Cycloserine

Warning

General Information

Restricted formulary antimicrobial: For details see OUH netFormulary

Renal and hepatic impairment

Renal impairment

Creatinine Clearance (ml/min)

Oral Dose

10-50

250mg-500mg every 24 hours. Monitor blood levels weekly

Less than 10

250mg-500mg every 36-48 hours. Monitor blood levels weekly.

HD/HDF/High Flux Dose as in creatinine clearance less than 10ml/min. Dialysed; give after dialysis
PD Dose as in creatinine clearance less than 10ml/min. Unknown dialysability

Note: dose ranges use creatinine clearance, rather than eGFR.

 

Hepatic impairment

No dose adjustment required but monitor hepatic function during treatment.

Pregnancy and breastfeeding

Pregnancy

Use only if potential benefit outweighs risk.

Breastfeeding

Discuss with pharmacy. 

Additional information

Cycloserine levels should be monitored in all patients, especially in those with renal impairment or if dose exceeds 500 mg daily or if signs of toxicity. Cycloserine level should not exceed 35 mg/L.  

References

  1. Summary of Product Characteristics (SPC) for Cycloserine. Accessed via www.medicines.org.uk 26/03/18. Last updated 07/02/18
  2. The Renal Drug Database. Cycloserine. Accessed via renaldrugdatabase.com 26/03/18. Last updated 20/02/18
  3. Drugs in Pregnancy and Lactation. Briggs G et al. 6th Edition.

Editorial Information

Next review date: 02 Mar 2026