Gm Sir .i M Age 44 Femal. Last Yr Im

Gm sir .i m age 44 femal. Last yr im donating my kidney. To my husband . i hv two kidds 23 yrs son and 18 yrs dat . Lot of tentions ...i m taken daily zolfresh 10 mg two tablets afternoon and night last 2 yrs 4 sleep.....but some times this tablets not woking ...pl suggest me .....i m doing all phisycal works everyday..