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Penicillin G potassium

Generic Name: Penicillin G potassium [PEN-i-SIL-in-G-poe-TAS-ee-um]
The Brand Name is Pfizer.
Dosage Forms: Injectable powder for injection (20,000,000 units; 5,000,000 units); intravenous solution (1000000 units/50 mL; 2,500,000 units/50 mL-NaCl 0.9%; 2000000 units/50 mL; 3000000 units/50 mL).
Class of Drugs: Natural penicillins

What is penicillin G potassium?

The penicillin G potassium drug is a quick-acting antibiotic that fights bacteria within your body.Penicillin G potassium is used to treat a variety of severe infections, such as staph and strep infections, diphtheria, meningitis, gonorrhea, and syphilis.

Penicillin G potassium can also be used to protect against heart valve infections for those with specific heart diseases who require dental procedures as well as operations.Penicillin G potassium can be used for other purposes not covered in this medication guide.

Side effects of Penicillin-G potassium

Contact a medical professional immediately. If you experience any of the following symptoms, they are warning signs of an allergic reaction: an allergic reaction that causes hives, difficulty breathing, and swelling of your lips, face, and tongue.

Penicillin G potassium can cause serious adverse side effects. Contact your doctor immediately in the event of:

  • The very first indication of any eruption regardless of how the rash is
  • Red or scaly skin
  • Fever, chills, swollen glands and muscles, joint discomfort, quick heartbeats, and a general feeling of ill-being;
  • A feeling of lightheadedness, as if you're passing out;
  • Extreme stomach pains; diarrhea that is bloody or watery
  • Very little or no urine;
  • The bruising, the intense tingling, the sensation of numbness or pain, the weakness
  • Seizure (convulsions);
  • Strange change in behavior or mood.

Common adverse effects of penicillin g potassium could include:

  • Mild diarrhea that is mild;
  • Headache;
  • Tongue hairy or black
  • Bleeding, swelling, pain, or irritation around any IV needle.

This isn't an exhaustive list of all adverse effects. Other adverse side effects may be observed. Speak with your doctor for medical advice regarding the side effects. You can report adverse reactions to the FDA at 1-800-FDA-1088.

Similar/related drugs

prednisone, amoxicillin, doxycycline, ciprofloxacin, cephalexin, metronidazole, and azithromycin


Follow all the instructions on the label of your medication and the package. Inform your healthcare professionals about your medical ailments, allergies, and any medications you take.

Before you take this drug

Penicillin should not be used with potassium if you're intolerant to penicillin. Inform your physician if you have had any allergic reaction to a cephalosporin antibiotic, such as Ceftin, Cefzil, Omnicef, Keflex, or others.

To make sure that penicillin G potassium is safe for you, ask your physician if you suffer from:

  • Asthma or an allergy history
  • Liver disease;
  • Kidney disease;
  • Heart disease;
  • If you are taking diuretics or a "water pill,"
  • If you are taking any different antibiotics, such as sulfa-containing drugs.

Penicillin G potassium should not be thought to cause harm to unborn babies. Consult your physician if you are expecting or planning to become pregnant while receiving treatment.

Penicillin G potassium can be found in breast milk and can cause harm to a nursing infant. Tell your doctor if are nursing your child.

How to take Penicillin G potassium?

Injections of penicillin G potassium are made into muscle as well as into veins using an IV. You can be instructed on how to inject at home. Do not inject yourself if you don't fully comprehend how to administer the injection and how to get rid of the needles that are used for IV tubing, IV needles, and other tools that are used to inject the medication.

Penicillin G potassium can even be administered to the lung's membrane or into the surrounding fluid of the spinal cord. A healthcare professional can give the injection.The penicillin G potassium medicine is in powder form and must be mixed with liquid (solvent) prior to use. If you're taking infusions at home, make sure that you know how to mix and store the medication.

Keep the dust in a cool, dry place, away from heat and moisture.Once the powder has been mixed with liquid, store it in a refrigerator for 7 days. Don't freeze it.Penicillin G potassium provided in a liquid that is frozen must be kept in an in-depth freezer at 4 degrees below zero (F).

The solution can be frozen in an airtight container or in a refrigerator. Don't heat the solution to make it easier to melt. After the solution has been cleared of its frozen state, it will appear clean.Penicillin G potassium frozen in the refrigerator and thawed there is to be utilized after 14 days. If you've thawed the medication at ambient temperature, you should take it within the next 24 hours. Do not freeze.Do not take penicillin G potassium when it's changed color or contains particles. Consult your pharmacist about the latest medication.

Utilize the disposable needle and syringe just once. Be sure to follow any local or state regulations regarding the disposal of needles and syringes that are no longer in use. Make sure you use a puncture-proof "sharps" disposal container (ask your pharmacist for one and what to do with the container). Keep the container away from animals and children.

This medication can lead to false results in certain laboratory tests that test for glucose (sugar) in the urine. Be sure to inform any doctor who treats patients with penicillin potassium.If you are taking this medicine over a long period of time, your blood might require testing to determine if the medicine does not cause harm. The liver and kidney functions could also be checked.

Make sure to take this medicine for the entire prescribed duration. The symptoms could improve before your illness is completely cleared. The absence of doses can increase the chance of developing new infections that are resistant to antibiotics. Penicillin G potassium is not able to cure a viral disease like influenza or the typical cold.When you've finished your penicillin G potassium, your physician might want to run tests to ensure that your infection is completely gone.

What happens If I miss a dose?

Take the missed dose immediately after you recall it. Do not take your missed dose if it's nearing the time for the next dose. Do not take extra medicine to replace the missed dose.

What happens if I overdose?

Contact emergency medical assistance if you believe you've taken too much penicillin-G potassium.

Overdose symptoms may include confusion, agitation, hallucinations, or seizures (convulsions).

What should be avoided?

The use of antibiotics can cause diarrhea, which could be a sign of a new infection. If you are experiencing diarrhea that is either watery or bloody, you should stop using this medication and consult your doctor. Don't take anti-diarrhoea medication unless you are advised to do so by your physician.

Interaction with other drugs

Other medications may be incompatible when used with penicillin G potassium, such as prescription and non-prescription drugs, vitamins, and herbal products. Be sure to inform your health professionals about the medicines you are taking now and any medication you stop or start using.