You can contact your local Lawyers Bar Association, use Google or the phone book to find it, and ask them if they can connect you with a lawyer who will work pro bono (that means, free). It seems that this is a life-threatening situation, and even without your ex on tape saying he didn't medicate your daughter, there are other ways to prove it. Take her to the doctor right after she has visited him and your doctor can document the situation. It seems you have a strong case to remove unsupervised visitation rights.