Course of therapy (7)
I believe the answer is:
regimen
'course of therapy' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for regimen that I've seen before include "Prescribed way of life like diet" , "Disciplined system" , "Systematic course of treatment, diet, etc" , "That's what doctor orders" , "Systematic way of life" .)