Fusidic acid is prescribed for skin infections caused by germs called staphylococcal bacteria. Such infections include impetigo, infected cuts and grazes, and infected dermatitis. It works by stopping the growth of the germs causing the infection. Sodium fusidate is a salt of fusidic acid and it works in the same way. You may find this name being given as the ingredient if you have been prescribed an ointment to use.
This is a companion discussion topic for the original article at https://patient.info/medicine/fusidic-acid-for-skin-infections-fucidin