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What should I discuss with my health care provider before using cefazolin (Ancef, Kefzol)?
Do not use this medication if you are allergic to cefazolin, any type of penicillin, or to other cephalosporin antibiotics, such as:
Before using cefazolin, tell your doctor if you are allergic to any drugs (especially penicillins), or if you have:
If you have any of these conditions, you may need a dose adjustment or special tests to safely use this medication.
FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
Cefazolin can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
How should I use cefazolin (Ancef, Kefzol)?
Cefazolin is given as an injection through a needle placed into a muscle or a vein. Your doctor, nurse, or other healthcare provider will give you this injection. You may be shown how to use your medicine at home. Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of needles, IV tubing, and other items used in giving the medicine.
You may need to mix cefazolin with a liquid (diluent) before using it. If you are using the injections at home, be sure you understand how to properly mix and store the medication.
Do not mix this medicine or draw your cefazolin dose into a syringe until you are ready to give yourself an injection.
Use each disposable needle only one time. Throw away used needles in a puncture-proof container (ask your pharmacist where you can get one and how to dispose of it). Keep this container out of the reach of children and pets.
Use this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Cefazolin will not treat a viral infection such as the common cold or flu.
This medication can cause you to have unusual results with certain lab tests to check for glucose (sugar) in the urine. Tell any doctor who treats you that you are using cefazolin.
Store unopened cefazolin vials at room temperature, away from light, heat, and moisture.
After mixing cefazolin with a diluent, you may store the mixture in the refrigerator and use it within 10 days. Do not freeze. Do not use the mixed medication if it has any particles in it.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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