Penicillin G

Description

Penicillin G is an antibiotic and is used in treating different types of bacter

ial infections of the skin, ear, nose, throat, chest, bone, private parts, etc. It is also known as benzylpenicillin. It should be taken as directed by the physician, at the correct doses, and for the exact duration prescribed. Do not stop taking it abruptly, as it may result in treatment failure and recurrence of the infection; thus, you should always complete the course of the treatment. You may experience diarrhoea as the most common side effect after taking this medicine. However, not everyone experiences this side effect. Consult your doctor if diarrhoea persists or worsens. Before using, inform the doctor if you are pregnant, planning a pregnancy, or are breastfeeding, and about your detailed medical history.

Uses

Contraindications

Side effects

Precautions and Warnings

Uses

Penicillin G is used to treat various types of bacterial infections such as skin infections, respiratory tract infections, dental infections, infection of tonsils and throat, lung infections, urinary ...

Contraindications

When should one not use Penicillin G

If you are allergic to Benzylpenicillin or Penicillin G.
If you have a history of an allergic reaction to other Penicillins or Cephalosporins.

Side effects

Common side effects of this drug are:

Nausea
Vomiting
Diarrhoea
Skin rashes

Precautions and Warnings

Pregnancy

Can I take Penicillin G during pregnancy?

There is limited information about the effects of the Penicillin G on pregnancy, thus you should avoid taking this medicine unless advised by your doctor.

Breast Feeding

Can I take Penicillin G while breastfeeding?

It is unknown if this medicine passes into breast milk, hence you should consult your doctor before using Penicillin G while breastfeeding.

Driving

Can I drive if I have consumed Penicillin G?

It has no or negligible effect on your ability to drive.

Alcohol

Can I consume alcohol with Penicillin G?

You should avoid consuming alcohol while on treatment with Penicillin G as alcohol is known to worsen infections.

Other General Warnings

Talk to your doctor if

You have any problems with your liver or kidneys.
You are suffering from any heart disease.
You experience any severe allergic reaction or side effects after taking Penicillin G.
You have diabetes.
You are pregnant or think you might be pregnant.
You are breastfeeding.

Mode of Action

How Does It Work?

Penicillin G works by inhibiting the enzymes called Penicillin-Binding Proteins (PBPs), which help to form a bacterial cell wall, thus causing bacteria's death and preventing the worsening of infectio...

Interactions

Interactions with other medicines

Penicillin G may interact with other medicines, discuss it with your doctor about all the medicines, supplements or herbal preparations you are taking. Also, you should inform your doctor if you have ...
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The use of oral contraceptives along this medicine may alter its effects and may result in an unwanted pregnancy.
Other medicines like probenecid, methotrexate, allopurinol, neomycin, warfarin should be used with caution along with this medicine.
You should let the doctor or the laboratory person know that you are using this medicine while going for a lab test, as this medicine may interfere with the lab tests.

Dosage

Overdose

If you think you have taken too much, contact your doctor immediately or visit your nearest hospital.

Missed a Dose

If you have missed taking any dose of Penicillin G take it as soon as you remember it. However, if it's time for your next dose, then skip the missed dose and continue with your regular dosing schedul...

Content Details

WRITTEN BY

Ravindra Ghongade

B. Pharm

REVIEWED BY

Dr. Nikita Toshi

BDS (Bachelor of Dental Surgery), WHO FIDES member

Frequently Asked Questions (FAQs)

Q: What is the use of Penicillin G?

A: Penicillin G is used to treat various types of bacterial infections such as skin infections, respiratory tract infection, dental infections, infection of tonsils and throat, lung infection, urinary tract infections, sexually transmitted infections, etc.

Q: Can I stop taking Penicillin G on my own?

A: No, you should never stop taking Penicillin G until it is advised by the doctor, even if you are feeling good. If you discontinue the treatment before completing the course, your symptoms may reoccur.

Q: Does Penicillin G cause diarrhoea?

A: Yes, Penicillin G may cause diarrhoea as its side effect.

Q: Is it habit-forming?

A: No habit-forming tendencies have been reported with Penicillin G. But you should take it only in doses as prescribed by the doctor.

Q: Does the Penicillin G treat urinary tract infection (UTI)?

A: Yes, the Penicillin G will help in treating urinary tract infection (UTI) caused by various bacterial organisms. Use it strictly as prescribed by your physician.

Q: What are the side effect of Penicillin G?

A: Nausea, vomiting, diarrhoea, skin rashes are a few common side effects of Penicillin G.

Q: What is the dosage of Penicillin G?

A: The dose and frequency of Penicillin G will be depending upon the type and severity of infection. Do not modify the dose on your own without consulting a doctor.

References

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Last Updated on: 09 Dec 2025 | 05:32 PM (IST)

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Disclaimer

The information provided herein is supplied to the best of our abilities to make it accurate and reliable as it is published after a review by a team of professionals. This information is solely intended to provide a general overview on the product and must be used for informational purposes only. You should not use the information provided herein to diagnose, prevent, or cure a health problem. Nothing contained on this page is intended to create a doctor-patient relationship, replace or be a substitute for a registered medical practitioner's medical treatment/advice or consultation. The absence of any information or warning to any medicine shall not be considered and assumed as an implied assurance. We highly recommend that you consult your registered medical practitioner for all queries or doubts related to your medical condition. You hereby agree that you shall not make any health or medical-related decision based in whole or in part on anything contained in the Site. Please click here for detailed T&C.