Girls, what vitamins do you give your children without a doctor's pres…

Girls, what vitamins do you give your children without a doctor's prescription? We only gave D3 and Omega for a long time, we don't give it anymore, I would like to buy D3 Max and something like Vitamin A, please advise ? It's getting cold soon, they mostly get sick now, we have a honeybee from vaccinations and didn't take any.