How can I get my son to take vitamins?

My son is almost two, vitamins are a PAIN but getting him to eat veggies or meat is close to impossible (I’ve tried the veggie chicken nuggets, fries, etc) can anyone recommend a liquid vitamin that contains iron and veggie supplements? I tried the gummy vitamins and he sucks the sugar stuff off of it then spits it out

Have you tried Pediasure?