prescription

US /prɪˈskrɪpʃən/

・

UK /prɪˈskrɪpʃn/

Specific medicine officially ordered for a patient
Set of appropriate guidelines for something
A recommendation or authorization, especially one given by an expert.
The establishment of a right through long use or possession.
An instruction written by a medical practitioner that authorizes a patient to be provided a medicine or treatment.

Examples

Would you like to wait while the pharmacist makes up your prescription?

I just get a repeat prescription every week.