Final answer:
When noticing an increase in the use of a particular controlled substance, it is important to report it to the pharmacy for investigation and appropriate action.
Step-by-step explanation:
When noticing an increase in the use of a particular controlled substance on a patient care unit at the hospital, it is important to take action. The correct course of action is to report it to the pharmacy. This will ensure that the situation is investigated and appropriate measures are taken to address any potential issues.
By reporting the increase in use of the controlled substance, the pharmacy can conduct an inquiry to determine if there are any legitimate reasons for the increase, such as changes in patient needs or medication protocols. It is their responsibility to monitor and manage the distribution of controlled substances within the hospital.
Ignoring the issue or doing nothing could potentially put patients' safety at risk, while notifying the police without any evidence or investigation could lead to unnecessary panic and implications for innocent individuals. Therefore, reporting it to the pharmacy is the most appropriate and responsible action to take in this situation.