You can get soluble multi vits but they are quite expensive. There are also powders, or you could try a tablet crusher and then just skul it down in a glass of juice. You should probably start with a good multi if you're not sure, one that includes minerals like selenium and iodine is likely to have a good balance of everything in it.

I take vit D because my levels are low, a b-complex (blackmores because it's slow release), and fish oil for my forgetful mind.

I also add in other things as needed like vit c powder when I'm feeling like I'm getting sick, lysine if I'm getting a cold sore, and zinc anytime I'm having skin problems.