question: HELLO I HAVE HAD A KNEE REVISION 12 WEEKS AGO AND AM SUFFERING WITH IMMENSE PAIN. MY CONSULTANT SENT ME TO A PAIN MANAGEMENT SPECIALIST . ONE OF THE TABS HE PUT ME ON IS AMITRIPTYLINE 1OMG I AT NIGHT. THEY ARE MAKING ME SLEEPY AND HAVE CHANGED MY MANNER I.E VERY DROUSY AND IRRITABLE. I AM NOT GOING TO TAKE THIS NIGHT. WHAT DO YOU THINK.