Can i use nystatin ointment on my yeast infection? i'm a 55yr old female.

Yes..although: You can, however, if you are only using it externally, you may not fully treat a vaginal infection. Try an over the counter vaginal treatment such as miconazole. If this does not resolve in a week, see your physician, and be sure not to use anything for at least 3 days before being seen to present a clear picture.

Yes: Nystatin kills most yeast but there are forms that are ideal for use on the vaginal area.