Final answer:
The correct action after administering medication to the wrong patient is to promptly inform the practitioner and follow with the necessary documentation and protocols to manage the situation.
Step-by-step explanation:
If you accidentally give medication to the wrong patient, the best course of action is to immediately inform the practitioner about the mistake and then complete the appropriate paperwork. It is crucial to address medication errors transparently to ensure the safety and well-being of patients. The steps taken after such an error should always be in line with the healthcare facility's protocols and may involve monitoring the patient who received the incorrect medication, administering any necessary treatment for potential adverse effects, and taking measures to prevent similar errors in the future.