Multivitamin or medicine? HLP ASAP!?

what is the best vitamin thing to take to help you with your immune system, to get proteins, fiber, menirals, vitamins for eyes, nails, skins, hair, and stuff? I don't eat ANY vegetables because they are disgusting and I'm wondering, is there any kind of mdicine that i can take to take care of my hair, teeth, bones, and stuff like that? I'm a 15 years old female.