That is a bear of a problem. I know firsthand. I think anxiety can be especially awful at night because you can feel so alone with it.

Like all drugs, anti-seizure meds have their downside. I wouldn't be eager to take them, if I hadn't had a seizure in 2 years. They are prescribed for conditions other than epilepsy. Supposedly, they can have a calming effect. (They are prescribed for bipolar disorder.) Maybe such a drug might help you, even if you don't really need the drug for seizure control.

I tried propranolol and carbemazipine and tegretol and neurontin. None of them did my anxiety any good.

It seems to me that doctors can be lazy about just looking for an easy diagnosis. Really, all doctors do now-a-days is prescribe drugs. I'm not convinced that there is a pharmaceutical answer to every psychological problem.

I think bipolars tend to have highly driven thought processes. (I'm tentatively diagnosed as "on the spectrum.") That seems to be part of what keeps me awake at night. I wish I knew what could be done to modify that tendency. Anxiety seems to rev it up. I think having trusted people in your life who provide emotional reassurance can help. Finding them can be tough. I think some of us grew up around anxiety and internalized it.