Question: can acyclovir ointment be used inside the mouth?
Answer: Do not let acyclovir cream or ointment get into your eyes, or inside your mouth or nose, and do not swallow the medication. Acyclovir cream should only be applied to skin where a cold sore has formed or seems likely to form. Do not apply acyclovir cream to any unaffected skin, or to genital herpes sores.