What are the effects of Benadryll on the liver if taken nightly for sleep aid? The only other drugs I take now & have for a decade are bio-identicals. Prior, I weaned myself off 25mg of Elavil taken for fibromyalgia diagnosis, also taken for sleep. I drink 2 glasses of red wine daily (& know I should reduce to one). Weight lifted for 30 yrs, do not smoke, eat much healthier than most, did cardio for decades, maintain an ideal weight, have less than perfect cholesterol (HDL, LDL) which had been a perfect profile for decades, good bones, perfect blood sugar. I took 50 mg for the first time last night & slept better than I have for a long time. Dry mouth was an issue this morning.