3. Where the sale or supply is in pursuance of a repeatable prescription and is not the first sale or supply in pursuance of that prescription, the particulars referred to in regulation 253(2)(a) are either—
(a)the date on which the prescription only medicine is sold or supplied and a reference to the entry in the record referred to in regulation 253(1) which was made in respect of the first sale or supply in pursuance of that prescription and which contains the particulars specified in paragraph 2; or
(b)the particulars specified in paragraph 2.