How should I use penicillin G potassium?
Penicillin G potassium is injected into a muscle or into a vein through an IV. You may be shown how to use an injection at home. Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of used needles, IV tubing, and other items used to inject the medicine.
Penicillin G potassium may also be injected into the membrane surrounding the lungs, or into the fluid surrounding the spinal cord. A healthcare provider will give you this type of injection.
Penicillin G potassium is a powder medicine that must be mixed with a liquid (solvent) before using it. If you are using the injections at home, be sure you understand how to properly mix and store the medicine.
Store the powder at room temperature away from moisture and heat.
After mixing the powder with a liquid, store in the refrigerator and use it within 7 days. Do not freeze.
Penicillin G potassium that is supplied as a frozen solution should be stored in a deep freezer at a temperature of 4 degrees below 0 (F).
Thaw the solution either in a refrigerator or at room temperature. Do not heat the medicine to thaw it more quickly. Once the solution has been thawed, it should look clear.
Penicillin G potassium that is thawed in the refrigerator should be used within 14 days. If you have thawed the medicine at room temperature, you must use it within 24 hours. Do not refreeze.
Do not use penicillin G potassium if it has changed colors or has particles in it. Call your pharmacist for new medication.
Use a disposable needle and syringe only once. Follow any state or local laws about throwing away used needles and syringes. Use a puncture-proof "sharps" disposal container (ask your pharmacist where to get one and how to throw it away). Keep this container out of the reach of children and pets.
This medicine can cause false results with certain lab tests for glucose (sugar) in the urine. Tell any doctor who treats you that you are using penicillin G potassium.
If you use this medicine long-term, your blood may need to be tested to make sure the medicine is not causing harmful effects. Your kidney or liver function may also need to be tested.
Use this medicine for the full prescribed length of time. Your symptoms may improve before the infection is completely cleared. Skipping doses may also increase your risk of further infection that is resistant to antibiotics. Penicillin G potassium will not treat a viral infection such as the flu or a common cold.
After you have finished your treatment with penicillin G potassium, your doctor may want to do tests to make sure your infection has completely cleared up.