Could Levothyroxine And Trazadone Be The Cause For Weight Gain?

...I would like to know what fruit juices I can drink while taking Levothyroxine .88,...and Trazadone 100mg...I have AFib...and Osteoporosos/Osteoarthritis.....also I have been told that Levothyroxine and Trazadone add weight...I am 59,..5 9 ...and weigh 173 lb. which is way too much for me...used to weighing about 140...but had Thyroid removed about 5 yrs ago...have been on Levothyroxine ever since...and steadily gaining weight...now on Trazadone for Insomnia....