Is dawaa ko ek hafte main poora karo

Doctor: is dawaa ko ek hafte main poora karo aur baad main aake milo.
Patient: teek hai doctor
(ek hafte ke baad)
Doctor: dawaa khatam huaa kya?
Patient: nahi doctor.
Doctor: kyu nahi?
Patient: usme likhaa thaa ke, bottle ko hamesha bandh rakhe