Dear Zephir,
Yes, I had the same dry mouth from Ativan (lorazepam trade name). A couple years ago, I was trying to switch from one tranquilizer to another, and was trying Ativan. I was a water-drinking juice-swallowing fool, and I wound up with IBS from that drug. No one knew that stuff was the reason. After endless tests, colonoscopy, going to several docs, I finally sat down and did me some study on the issue. I thought it might be the Ativan, and it was.