Bacitracin/polymyxin B

Bacitracin/polymyxin B (trade name Polysporin among others) is a topical antibiotic cream or ointment.

[1] The active ingredients are polymyxin B, bacitracin and occasionally garamycin or gramicidin.

Though Polysporin is marketed in the US, it holds a much smaller market share than in Canada and acts as a substitute to Johnson & Johnson's Neosporin for those allergic to the antibiotic neomycin.

However, allergy to bacitracin/polymyxin B has also been reported.

[2] There is also an ophthalmological ointment, eye and ear drops.