(1) A person shall not supply any morphine, cocaine, ecgonine, diacetylmorphine or their respective salts or any medicinal opium or any extract or tincture of Indian hemp unless the package or bottle containing it is plainly marked with the amount of the drug in the package or bottle.
(2) A person shall not supply any preparation, admixture, extract, or other substance containing any of these last-mentioned drugs and coming within these Regulations unless the package or bottle is plainly marked—
(a) in the case of a powder, solution, or ointment, with the total amount thereof in the package or bottle and the percentage of the drug in the powder, solution, or ointment;
(b) in the case of tablets or other articles with the amount the drug in each article and the number of articles in the package or bottle.
(3) This regulation shall not apply to any preparation dispensed by a medical practitioner or on the prescription of a medical practitioner.