Ungüento para la piel con polimixina y bacitracina
Polyfax
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSLast updated 29 de mayo de 2023
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Clinical author's note Michael Stewart 22/5/2023: Polyfax® ointment was discontinued in the UK in November 2017. At the time of review there are no branded or generic creams or ointments containing polymyxin and bacitracin available in the UK. Equivalent products may still be available in other countries. This medicine leaflet is based on medical information available in the UK at the time of writing and is left here for reference purposes. Please also refer to the manufacturer's information supplied with your medicine.
Use the ointment twice a day unless your doctor tells you otherwise.
Only apply it to the areas of skin which are infected.
You should notice an improvement within about 4-5 days.
At a glance
Polymyxin and bacitracin ointment is a skin cream used for bacterial skin infections.
It is usually applied twice a day to the infected skin.
You should read the manufacturer's leaflet before using it.
Tell your doctor if you are pregnant, breastfeeding, or have kidney problems.
Minor skin irritation can occur; stop use if it becomes severe.
Seek medical advice if your skin does not improve after 4-5 days.
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About polymyxin and bacitracin ointment
Tipo de medicamento | Una crema para la piel antiinfecciosa |
Usado para | Infecciones de la piel |
También llamado | Polyfax® (discontinued) |
Disponible como | Ungüento |
Polymyxin and bacitracin ointment is used to treat skin infections caused by bacteria. By treating the infection, it will allow your skin to heal.
Before using polymyxin and bacitracin ointment
Volver al contenidoTo make sure this is the right treatment for you, before you start using the ointment it is important that your doctor knows:
Si estás embarazada o amamantando.
If you have ever had an allergic reaction to a skin cream/ointment, or to any other medicine.
Si tienes algún problema con el funcionamiento de tus riñones.
If you are using any other skin preparations or taking any medicines. This includes any preparations you are using which are available to buy without a prescription, as well as herbal and complementary medicines.
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How to use polymyxin and bacitracin ointment
Volver al contenidoBefore you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The leaflet will give you more information about the ointment and a full list of the side-effects which you may experience from using it.
Your doctor will tell you how often to use the cream. It is usual to apply it twice daily, although it may be more frequently than this if your doctor thinks it necessary. Only apply it to the areas of skin which are infected.
You should notice your skin starting to get better within a few days. If you haven't noticed any improvement after 4-5 days, check with your doctor for further advice.
Can polymyxin and bacitracin ointment cause problems?
Volver al contenidoOn occasion, the ointment may cause some minor skin irritation. If the irritation becomes troublesome or severe, stop using it and ask your doctor or pharmacist for advice.
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How to store polymyxin and bacitracin ointment
Volver al contenidoMantenga todos los medicamentos fuera del alcance y la vista de los niños.
Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.
Do not store any ointment left over at the end of your treatment for another time.
Información importante sobre todos los medicamentos
Volver al contenidoInformación importante sobre todos los medicamentos
Esta preparación es solo para uso en la piel. Si alguien ingiere algo de esto por accidente, acuda al departamento de accidentes y emergencias de su hospital local. Lleve el envase con usted, incluso si está vacío.
Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, que se encargará de desecharlos por ti.
Si tienes alguna pregunta sobre este medicamento, consulta a tu farmacéutico.
Informar efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede reportarlos en línea a través de Yellow Card website.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Preguntas frecuentes
What kind of infections does polymyxin and bacitracin ointment treat?
Polymyxin and bacitracin ointment is specifically used to treat skin infections that are caused by bacteria. By clearing up the bacterial infection, it helps your skin to heal properly.
How quickly should I expect to see an improvement in my skin after starting this treatment?
You should start to notice your skin getting better within a few days of starting to use the ointment. If you haven't seen any improvement after 4-5 days, you should contact your doctor for further guidance.
Are there any reasons why I might not be able to use polymyxin and bacitracin ointment?
Yes, it's important to tell your doctor if you are pregnant or breastfeeding, if you have ever had an allergic reaction to skin creams or other medicines, or if you have any problems with your kidney function. You should also mention any other skin treatments or medicines you are using, including those bought without a prescription or any herbal remedies.
What should I do if I experience skin irritation from the ointment?
On rare occasions, this ointment might cause some minor skin irritation. If you find the irritation becomes bothersome or severe, you should stop using the ointment and ask your doctor or a pharmacist for advice.
Can I use polymyxin and bacitracin ointment for other skin problems in the future, if I have some left over?
No, you should not keep any leftover ointment once your treatment is finished. This medicine is specifically prescribed for your current condition. You should dispose of any out-of-date or unwanted medicines by taking them to your local pharmacy.
Lecturas adicionales y referencias
- British National Formulary, 79th Edition (Mar 2020); Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
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About the authorView full bio

Michael Stewart, MRPharmS
Medicine Leaflet Review Manager – Contractor, Pharmacist
BPharm (Hons), MRPharmS
Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.
About the reviewer

Sid Dajani
Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Next review due: 28 Nov 2027
29 de mayo de 2023 | Última versión

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