Nalidixic and Warfarin

Publication Date: 
Tue, 11/08/2011
By: Alere Staff

Nalidixic acid, also known as brand name NegGram®, is an antibiotic prescribed for to treat or prevent bacterial infections. Patients taking warfarin can expect to see an increase in bleeding risk and more frequent blood tests are recommended to monitor INR values.1 Your INR may need to be monitored more frequently.

Please notify your doctor of any medications you may have been prescribed as they may interact with wafarin.

  1. Lero J, Levartowsky D, Sharon C. Interaction between nalidixic acid and warfarin. Ann Intern Med. 1987 Oct; 107(4):601.