If your symptoms do not improve within a few days, or if they become worse, check with your doctor.
Cefazolin may cause diarrhea, and in some cases it can be severe. Do not take any medicine to treat diarrhea without first checking with your doctor. Diarrhea medicines may make the diarrhea worse or make it last longer. If you have any questions about this or if mild diarrhea continues or gets worse, check with your doctor.
Before you have any medical tests, tell the medical doctor in charge that you are using this medicine. The results of some tests may be affected by this medicine.
Do not take other medicines unless they have been discussed with your doctor. This includes calcium-containing solutions for injection, prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.