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To prevent the wound from becoming infected, apply this medicine and then keep it dry.

As I have only heard "apply this ointment on the wound" but not "apply this medicine," I wonder if it sounds right.
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It's a bit odd, perhaps, but completely understandable.

CJ
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Angliholic
Thanks, CJ.

That means "apply this ointment to the wound" sound better, right?
Right. "medication/medicine" generally refers to something ingested.
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Comments  
Thanks, CJ.

That means "apply this ointment to the wound" sound better, right?
 Philip's reply was promoted to an answer.
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