I worry about counting medicine that you need to feel better, it's not like they're made solely from sugar or are going to do any damage to your diet, but feeling ill may well do. Not sure what the official WW line on it would be, but i think it would be wrong to deprive yourself of medicine because you're worried about points.
If it were something like cough sweets or strepsils, which do have lots of sugar i could understand it, but I shouldn't think that capsules would be a problem.