It could make her sick, because even to much of a good thing can make you very ill. it also might make her drowsy because you are only suppose to take a certain amount of douses of that pill, so to much of that can make you ill. i hope this helps some!
THe reason why they cant walk correctly is becuase there lats are to big HOpe this helped
Visual would be the main one since the main part of the drug is hallucination.