Until there is a court order stating otherwise, the man you chose to marry and have the child with has every bit of legal access to the child that you do. If you've got an arguement that he's a danger to the child, you seek a restraining order. THAT is what sheriff's deputies, who are officers of the COURT can act upon. Then, you file for divorce and seek primary custody. You could even ask for supervised visitation, if you're prepared to show the court that the child isn't receiving his meds when with dad. So long as you both stay married to him and don't get a restraining order, that will be seen as your approval of your husband's parenting and effectively ties the hands of those you keep turning to for assistance.