What characteristic defines the logbook for pseudoephedrine sales?

The defining characteristic of the logbook for pseudoephedrine sales is that it must contain the date and time of the sale. This requirement is in place to ensure proper tracking and monitoring of pseudoephedrine transactions, which is critical due to the substance's potential for misuse in the illicit production of methamphetamine. By documenting the date and time, pharmacies can maintain a clear record of sales and adhere to regulatory guidelines that are intended to limit access to products containing pseudoephedrine.

This logging system is part of broader efforts to prevent abuse while allowing legitimate access for consumers who need the medication for valid health reasons. Compliance with this regulation not only protects public health but also helps pharmacies avoid penalties associated with improper sales practices.