I ordered some from Vet UK as we were getting low, I normally order 300 tablets but made a mistake and ordered 100! When they came last week I opened them and the tablets are huge, a lot bigger than normal. I've emailed Vet UK and they say there are no changes to the ingredients etc and have asked for batch numbers. I've also emailed them pics.
Our vet nurse at work also looked them over and is on the case, we can't understand it.
I've attached the pics I emailed