How is nafcillin given?
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.
Nafcillin is given as an infusion into a vein, or injected into a muscle. A healthcare provider will give your first dose and may teach you how to properly use the medication by yourself.
Infusion into a vein can take 30 to 60 minutes to complete.
Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you don't understand all instructions.
Nafcillin powder must be mixed with a liquid (diluent) before using it.
If you inject into a muscle, give the injection right away after mixing the powder and diluent.
If you inject into a vein, you may store the mixture at room temperature for up to 3 days, or in a refrigerator for up to 7 days. Do not use if the mixture has changed colors or has particles in it. Call your pharmacist for new medicine.
Store unmixed nafcillin powder at room temperature away from moisture and heat.
Your medicine may also be supplied as a premixed solution that has been frozen in a plastic container.
Store frozen nafcillin in a deep freezer, at -4 degrees Fahrenheit (-20 degrees Celsius).
Take the medicine out of the freezer and let it reach room temperature before injecting your dose. You may also thaw the medicine in a refrigerator. Do not use heat to thaw frozen nafcillin.
Use this medicine for the full prescribed length of time, even if your symptoms quickly improve. Skipping doses can increase your risk of infection that is resistant to medication. Nafcillin will not treat a viral infection such as the flu or a common cold.
Use a needle and syringe only once and then place them in a puncture-proof "sharps" container. Follow state or local laws about how to dispose of this container. Keep it out of the reach of children and pets.