Any physician who deems liquor necessary for the health of a patient, whether an interdicted person or not, whom he or she has seen or visited professionally may give to the patient a prescription therefor, signed by the physician, or the physician may administer the liquor to the patient, for which purpose the physician may administer the liquor purchased by him or her under special permit and may charge for the liquor so administered; but no prescription shall be given or liquor be administered by a physician except to bona fide patients in cases of actual need, and when in the judgment of the physician the use of liquor as medicine in the quantity prescribed or administered is necessary; and any physician who administers liquor in evasion or violation of this title shall be guilty of a violation of this title.