I take Doxepin. I have been on Meds that cause weight gain Doxepin was fine. It didn't cause any weight gain. No side effects at all. I've been on it to keep me asleep. 10 mg.
I actually like Doxepin and I have a lot of the same responses as you do. I get very restless with over the counter MEDS.
Ask me any questions you want.