Take many meds like tegretol and prozac. i have very vivid dreams is this a side effect of seizure/anxiety meds? if yes why do the crazy dreams happen

It can be: Talk w/ your Dr about these experiences. Both your conditions and the medication could be involved and hopefully you can get back to sleep to avoid a deficit. There are various theories about dream content and none are certain. Brain activity responds to the electro-chemistry and it generates images that we can interpret thru our life history. Talk about it and try not to worry.