How long must elapse before a product can be resold to the same purchaser?

The correct response is that a product must not be resold to the same purchaser for a minimum period of 48 hours. This regulation is typically in place to prevent the rapid reselling of certain substances or products, especially in categories where there is a potential for abuse, such as over-the-counter medications or specific controlled substances.

This time frame allows for a cooling-off period, ensuring that the same individual is not able to acquire the product repeatedly in a short duration, which could indicate misuse or abuse. Additionally, this rule helps maintain a level of control over the distribution of these products, ensuring they are used appropriately and reduces the risk of dependence or other negative health impacts.

Understanding these regulations is crucial for compliance in pharmacy practice, especially when managing inventory and ensuring patient safety. The other durations provided do not align with the established guidelines that govern retail sale practices, hence are not considered applicable in this context.