P.R. Laws tit. 24, § 1001
No natural or [juridical] person, association, or firm shall sell, give, or dispose of poisonous substances unless the box, bottle, pasteboard box, cylinder, plate, package, or container in which it is dispatched has, attached thereto, a label with a skull and cross-bones printed below it, and on which shall appear the name of the substance and the word poison. If it is any device impregnated with toxic substances, such as paper for killing flies and insects in general, or in any other similar manner that may be dangerous, the preceding requirements for labeling shall be strictly applied. The label shall also have printed on it the emergency treatment and the name of one or two antidotes for the poison, the name of the seller, and the address of the pharmacy, drugstore, or commercial or industrial establishment where said poison was sold.
The seller shall assure himself that the purchaser has knowledge of the poisonous nature of the drug, and that it will be used for a legitimate and lawful purpose.
He shall refuse to sell to persons under sixteen years of age, or if the purchaser is apparently suffering from some mental disease, or if he is an alcoholic, or if, for any reason, he does not offer guaranties of morality and good judgment.
History —May 5, 1939, No. 115, p. 600, § 1, eff. 90 days after May 5, 1939.