I had an entire mandarin orange segment come out once in less than an hour. I had a large walnut chunk too! Or was it a pecan?
Anyhoo - I had never heard of this med, so I looked it up. It has some very favorable reviews on webmd! Though a few people said it was being discontinued, and a few others said it wasn't. Hmm.. who knows.
It does say that extended release tablets may be split, so maybe your is extended release? In that case, you may just see the outer shell and the inside dissolved in your body. That happens with asacol - the whole shell is in your poops. Also - even with Pentasa, the little teeny balls within the capsule are actually extended release balls and it appears that they are just passing through whole.