Vitamins

There is vitamin drops you can use which you put on your nipple before baby feeds. I think it’s vitamin C but I can’t quite remember 👀

Just Vitamin D for breastfed babies. They get all other vitamins from your breastmilk

You don’t need to unless they’re deficient in something. Or vitamin D if they’re pretty jaundice, though minor cases you can just nurse like crazy & expose them to indirect sunlight a few times a day. But honestly breastmilk should be giving them everything they need.