Adult

Pyrimethamine

Warning

General Information

Restricted formulary antimicrobial: For details see OUH netFormulary

Renal and hepatic impairment

Renal impairment

No dose adjustment necessary in renal impairment

 

Hepatic impairment

Manufacturer advises caution in hepatic impairment

Pregnancy and breastfeeding

Pregnancy

Theoretical teratogenic risk in first trimester (folate antagonist) – should be avoided unless the benefits outweigh the risks of treatment

 

Breastfeeding

Discuss with pharmacy.

Additional information

Monitor full blood count on prolonged treatment

References

  1. Summary of product characteristics for Daraprim tablets (GlaxoSmithKline UK). Accessed via www.medicines.org.uk 14/1/19; last updated 4/1/18
  2. BNF online accessed via www.medicinescomplete.com 14/1/19; last updated 11/12/18

Editorial Information

Next review date: 02 Mar 2026