Why do beta-blockers sometimes cause nightmares?

Why do beta-blockers sometimes cause nightmares?
  • They increase the cortisol levels during REM sleep
  • They cross the blood-brain barrier and alter REM sleep and melatonin signalling
  • They cause nocturnal hypoglycemia that triggers dream recall
  • They increase dopamine activity in the limbic system
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Do you know of any other drugs that cause nightmares and it’s mechanism?