Things have been somewhat better with the Immodium and the Cavilon. There are still a lot of bathroom trips but some longer breaks between them. So I'll keep experimenting.
One thing that I found out about Facebook is that it doesn't like to be in a Sandbox. A Sandbox is using a browser or virtual machine for Facebook only. You do all of your regular browsing using another browser or another machine. The Sandbox means that it can't grab information on what other things you are doing on the browser directly. So I read the notification emails on my phone and on my main laptop. Facebook is able to determine the system information or browser or mail client that I'm reading my email on and it's disconnected from the virtual machine where I read Facebook. So the first time they required a phone number. The second time they required a picture. I am locked out of my account until they verify the picture. I assume that they have pictures of everyone in the world which they compare with the submitted picture. At any rate, FB is a creepy company.