Is It Safe To Take Gabaneuron For Pain In Left Shoulder And Hand?

Hi. I m 35yrs old female and have severe pain in my left shoulder and hand as well. acc to the oethopaedist doc i m hvng a crowding of rib cage on my shoulder. He has advised me to take gabaneuron100 mg daily once at night. How far is it gng to help me in my pain alongwith physiotherapy?