(1) For the purposes of this Division, the applicable quantity of a brand of a pharmaceutical item is:
(a) if the approved ex - manufacturer price of the brand of the pharmaceutical item has not been increased on or after 1 July 2022:
(i) 4 months stock by reference to usual demand for the brand of the pharmaceutical item; or
(ii) if another quantity is ascertained in accordance with a determination under subsection (2)--that quantity; or
(b) if the approved ex - manufacturer price of the brand of the pharmaceutical item was increased on or after 1 July 2022:
(i) 6 months stock by reference to usual demand for the brand of the pharmaceutical item; or
(ii) if another quantity is ascertained in accordance with a determination under subsection (2)--that quantity.
(2) The Minister may, by legislative instrument, make a determination for the purposes of either or both of the following:
(a) subparagraph (1)(a)(ii);
(b) subparagraph (1)(b)(ii).
(3) A quantity ascertained in accordance with a determination under subsection (2) may be a specified number of months stock by reference to usual demand for the brand of the pharmaceutical item.
(4) Subsection (3) does not limit subsection (2).
(5) For the purposes of this section, usual demand for a brand of a pharmaceutical item is to be ascertained in accordance with the regulations.