I Am Not Able To Sustain Sleep And Do Not

I am not able to sustain sleep and do not want to take Xanax or other sleep medicine. I am chronically tired, weigh 88 lbs @at 76 yrs, and have weighed the same since before my last heart valve replacement (for repaired but failed mitral) 2 yrs ago. My internist feels I need sleep medication. I am not eager to take it. I take very little medication but am on Coumadin and Lipitor. Would 5 Hydro Triptaphan be right for me to try?