How can you debate this?

I've been trying to get the kids to take vitamins. I've also been on a quest to find one that will actually dissolve when they eat it so it's fully absorbed. I finally caved and bought the Flintstone ones after a discussion in mom's group. I was handing them out to the kids and Ryan said he didn't want one. I tried to explain to him that this is medicine that will help keep him healthy. I told him Jake takes it, Jazmin takes it, Daddy takes it, Mommy takes it, even the baby in mommy's tummy takes it. He said, "yep, but I don't".