Can you mix the medicines Lexapro 10.0 mg in morning and Alprazolam 0.50 mg in morning and Nortiptyline 50.0 mg at nighttime and Benzonatate 200.0 mg at 2am in the morning?

I take both. I checked with my doctor and pharmacist first. It takes a few weeks for the lexapro to have a full effect on you, but it is also to treat anxiety. So, eventually, you shouldn't need alprazolam anymore.