DD2 takes pretty serious medication every day that she simply has to take and she is terrible with it, so we've gone through quite a few options and find the best is crushing it, mixing with a smidge of water to dissolve the tablet, and then making a very, very small milkshake - literally only 20mls of milk. I found that anything I gave her, ie in a dropper, syringe or whatever was vomitted back up, but if she can drink it herself it seems to help.

Good luck. I hope you find something that works.