Speak to your pharmacist as they may be able to make the same drug up in a different flavour, alternatively compounding pharmacists are able to add various flavours to medicines.

Also, if she screams when she sees the bottles, keep them hidden and just bring the medicine over once you've got it all measured up.

The other thing I was going to suggest was a lolly bribe. Very un-p.c. I know but we always made it 'fun' by singing "a spoonful of sugar makes the medicine go down..." as we did it.