My son bited nipple paining a lot from week and suggest ointment to apply

A. Tbact ointment you can use if you got a cut or there was bleeding or something because it is a good ointment to use but if it is only painting then you can take a painkiller and a little bit of cut is there no blood or nothing then you can apply Boroline and please start using a nipple shield otherwise this is going to increase over the period