Hi, brokenandbattered32, and welcome to Psych Central! Not everyone gets the side effects that are mentioned. I took remeron. It was fine except I gained weight like crazy. My sis takes effexor with no problems. Neither causes sleepiness in us.
Vertigo is dizziness.
I don't see why taking them both could be bad. But you'll only know how your body acts by trying both off them. You and your doc can monitor any potential side effects. Okay?