7.—(1) A person who prescribes a product classified as POM-V or POM-VPS, or supplies a product classified as NFA-VPS—
(a)before doing so, must be satisfied that the person who will use the product is competent to do so safely, and intends to use it for a purpose for which it is authorised;
(b)when doing so, must advise on its safe administration and on any warnings or contra-indications on the label or package leaflet; and
(c)must not prescribe (or, in the case of a NFA-VPS product, supply) more than the minimum amount required for the treatment; but it is a defence to show that—
(i)the product prescribed or supplied was in a container specified in the marketing authorisation;
(ii)the manufacturer does not supply that veterinary medicinal product in a smaller container; and
(iii)the person prescribing or supplying is not a person authorised to break open the package before supply.
(2) It is an offence to fail to comply with this paragraph.