Antibiotics Home > Cefazolin
- Kidney disease, such as kidney failure (renal failure)
- An allergy to cephalosporin or penicillin antibiotics
- Any other allergies, including to foods, dyes, or preservatives.
- Pregnant or thinking of becoming pregnant (see Ancef and Pregnancy)
- Breastfeeding (see Ancef and Breastfeeding).
- This medication is given by IV or by intramuscular injection. It is usually given every 6 to 12 hours.
- For serious infections, it is usually best to give this drug by IV rather than an intramuscular injection.
- Cefazolin is often given for a few days after the infection has cleared up. For serious infections, an even longer treatment course may be recommended.