I was told by a staff member at my physician's office that I shouldn't take it, as it could interfere with the test due to obscuring the camera. I've never heard of such a thing. I filled out a medical questionnaire indicating the medication that I'm currently taking, but never heard anything back.
That is the most amazing sputter of misinformation I've heard in a while.
Required medications including those for hypertension (and anxiety/panic) are allowed with a sip of water. They won't "obscure the camera." Just be sure to tell whoever is administering the sedative that you've had your morning dose. It won't interfere with the action of the sedative, or the colonoscopy itself, but it may mean that you will be drowsier afterward. I'm sure they told you to have someone to drive you home since you will be drowsy for several hours afterward.
Good luck with your colonoscopy. They sound a whole lot worse than they are. Actually the bowel prep is the worst part and the colonoscopy itself is a piece of cake.
Thank you for your input. I'm in the midst of prepping now (no results yet). I was a little dismayed at the answer that I received, as I took my daily dose at the prescribed times when I had my gallbladder removed. No problems afterwards and I was alert right after coming out of anesthesia.