I've Been Taking Effexor XR , 75mg, Twice A Day,

I've been taking Effexor XR , 75mg, twice a day, for about 4 months, for depression and anxiety.. I have had trouble sleeping for about 3-4 months. Wake up and have trouble falling back to sleep at least 4-5 times a night. Just can't stay asleep... Tried many different OTC sleeping Meds. but none of them help at all. Took 4 Tylenol PM caplets last night and was very discouraged, as once again, experienced no results.. What can I take that WILL work? Thank you so much for your time and expertise.