Bacitracin + Polymyxin B

By Medically reviewed by hellodoktor

Generic Name: Bacitracin + Polymyxin B Brand Name(s): Bacitracin + Polymyxin B. Avability: OTC Pregnancy Category: N


What is Bacitracin + Polymyxin B used for?

Bacitracin + Polymyxin B is used to treat minor wounds (e.g., cuts, scrapes, burns) and to help prevent or treat mild skin infections. Minor skin infections and wounds usually heal without treatment, but some minor skin wounds may heal faster when an antibiotic is applied to the affected area. This product contains antibiotics that work by slowing or stopping the growth of bacteria.

How should I take Bacitracin + Polymyxin B?

This medication is for use on the skin only. Follow all directions on the product package, or use as directed by your doctor. Wash your hands before using. Avoid getting this product in your eyes or inside the mouth.

How do I store Bacitracin + Polymyxin B?

Bacitracin + Polymyxin B is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Bacitracin + Polymyxin B in the bathroom or the freezer. There may be different brands of Bacitracin + Polymyxin B that may have different storage needs. 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 Bacitracin + Polymyxin B down the toilet or pour them into a drain unless instructed to do so. 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 Bacitracin + Polymyxin B?

Before using this product, tell your doctor or pharmacist if you are allergic to any of its ingredients; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: other skin conditions (e.g., eczema, viral skin infections such as shingles, chickenpox, cold sores).

Before having surgery, tell your doctor or dentist that you are using this product.

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is not known whether this drug passes into breast milk. Consult your doctor before breast-feeding.

Is it safe during pregnancy or breast-feeding?

There are no adequate studies in women for determining risk when using this Bacitracin + Polymyxin B during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking Bacitracin + Polymyxin B. Bacitracin + Polymyxin B is pregnancy risk category N 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

Side effects

What side effects can occur from Bacitracin + Polymyxin B?

Burning, redness, or irritation of the skin may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

If your doctor has prescribed this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if any of these unlikely but serious side effects occur: balance/hearing problems, “hair bumps” (folliculitis).

Rarely, use of this medication for prolonged or repeated periods may result in a fungal infection or a different bacterial skin infection. Contact your doctor if you notice any new unusual skin symptoms (e.g., scaling, swelling, hot skin) while using this medication. A different medication may need to be used.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.


What drugs may interact with Bacitracin + Polymyxin B?

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: other products for the skin (e.g., corticosteroids/antiseptics).

Bacitracin + Polymyxin B may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Does food or alcohol interact with Bacitracin + Polymyxin B?

Bacitracin + Polymyxin B may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with Bacitracin + Polymyxin B?

Bacitracin + Polymyxin B may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using this Bacitracin + Polymyxin B.

What is the dose of Bacitracin + Polymyxin B for an adult?

Usual Adult Dose For Infection Prevention

Apply to affected area 1 to 3 times/day; may cover with sterile bandage if needed.

What is the dose of Bacitracin + Polymyxin B for a child?

Usual Pediatric Dose For Infection Prevention

Apply to affected area 1 to 3 times/day; may cover with sterile bandage if needed.

How is Bacitracin + Polymyxin B available?

Bacitracin + Polymyxin B is available in the following dosage forms and strengths:

  • Topical ointment.

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of Bacitracin + Polymyxin B, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.


Review Date: August 29, 2018 | Last Modified: September 12, 2019

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