Although I don't doubt that Jan is correct that Imodium works as well as anti-spasmodics for some people, it didn't for me. I would eat a meal and then, in rapid fire succession, have 10 BMs in a half hour. Antispasmodics taken 45 minutes before meals resolved that issue. Imodium did not. If the imodium isn't working as it wasn't in my case, anti-spasmodics, which have a more potent action, should be attempted.
Metamucil helps with thickening, regularity and clean evacuation. I like the wafers, although they are a bit more expensive than the powder.