I have the exact same problem, GHR. :(
I personally wouldn't take any prescription medication concomitantly with any herbal supplement. Herbal supplements are rarely, if ever, tested by the FDA for interactions with other meds or on their own for that matter.
With my anxiety I can't even handle caffeine anymore. I don't know if it's psychosomatic or not but anything more than one cup of "real" coffee in the morning is enough to put me over the edge.
Just remember that a lot of the "controlled release" medications can cause you problems if you crush (chew) them. If you reserve yourself to chewing any pills, please double-check that they are safe to "crush".
I couldn't swallow pills until I was about 14, and I don't remember how I got over it.