Which action is legal for a pharmacist if a patient has not picked up their prescription?

Calling the patient at home is a legal action for a pharmacist to take if a patient has not picked up their prescription. This method of communication respects patient privacy and allows the pharmacist to discuss the prescription directly with the individual who is responsible for its retrieval.

Engaging in this manner also supports compliance with regulations regarding patient confidentiality, such as those outlined in HIPAA (Health Insurance Portability and Accountability Act), ensuring that health-related discussions occur within appropriate boundaries.

In contrast, other options such as sending unencrypted emails, calling a family member directly without patient consent, or leaving a message on social media would compromise patient privacy and could potentially lead to unauthorized disclosure of sensitive health information. Therefore, contacting the patient directly at home aligns with both legal and ethical considerations in pharmacy practice.