I've Been Attempting To Get To The Bottom Of The

I've been attempting to get to the bottom of the unrelenting vivid dreams I've been having. My investigation that bendroflumethiazide may be the culprit. The only way to find out is to stop taking it for a 3-5 days.
Is it safe to do this?
I am on 2 other beta blockers for various things related to a heart arrythmia that put me into hospital 14 years ago, but have not had any other heart events since then.