(1)  Subject to subregulation (2) , where a preparation contains 2 or more scheduled substances, that preparation, unless the contrary intention appears, is to be taken to be included in each of the Schedules to the Poisons List in which those substances are included.

(2)  Where, in relation to a preparation referred to in subregulation (1) , it is not possible to comply both with a requirement of the Act applicable to that preparation by reason of its inclusion in one Schedule to the Poisons List and with such a requirement applicable to it by reason of its inclusion in another such Schedule, the preparation, unless the contrary intention appears, is to be taken for the purposes of the Act to be included in the more restrictive of those Schedules.

(3)  For the purposes of subregulation (2) , the comparative restrictiveness of the Schedules to the Poisons List, in descending order, is 8, 4, 7, 1, 3, 2, 6, 5.