Other names for penicillin G include the following:
- Procaine benzylpenicillin
- Benzylpenicillin procaine
- Pen G
What is penicillin G used for?
Penicillin G is used to treat many different types of infections caused by bacteria, including syphilis (a sexually transmitted disease).
How should I take penicillin G?
Read the directions on the packaging for complete information. Check the label and expiration date.
For parenteral dosage forms, only a licensed healthcare professional should administer it via IM injection.
How do I store penicillin G?
This drug is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store it in the bathroom or the freezer.
This drug is best stored in the refrigerator (between 2-8°C). To prevent drug damage, you should not store it in the bathroom or the freezer.
There may be different brands of this drug that may have different storage needs. So, it is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.
You should not flush this product down the toilet or pour them into a drain unless instructed to do so. Additionally, it is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.
Precautions & Warnings
What should I know before using penicillin G?
Before using this drug, tell your doctor if you are/have:
- Pregnant or breastfeeding.
- Taking any other medicines. This includes any prescription, OTC, and herbal remedies.
- Oral contraceptives
- Using spermicides
- An allergy to any of the ingredients of this product.
- Any other illnesses, disorders, or medical conditions.
Is it safe during pregnancy or breastfeeding?
Unfortunately, there isn’t enough information about the safety of using this drug during pregnancy and breastfeeding. However, it is likely safe to take. Please always consult with your doctor to weigh the potential benefits and risks before taking any medication.
This medication is pregnancy risk category B according to the US Food and Drug Administration (FDA).
FDA pregnancy risk category reference below:
- A= No risk
- B= No risk in some studies
- C= There may be some risk
- D= Positive evidence of risk
- X= Contraindicated
- N= Unknown
What side effects can occur from penicillin G?
Like all drugs, this product may have side effects. If they occur, side effects are generally mild and resolve once treatment is finished or the dose is lowered. Some reported side effects include:
- Injection site pain or swelling
- Vaginal itching or discharge
- White patches in your mouth or throat (thrush)
- Nausea, vomiting
- Blurred vision, ringing in your ears
- Headache, dizziness
- Mild skin rash
Seek medical attention immediately if you experience any of the following: