gastric band

I take sitagliptin 100mg but I get some side effects (tiredness and funny taste), so I would like to take it in divided doses. Would sitagliptin work as intended if I split the tablet? The tablet is coated in a special film but I was wondering if that's there to reduce stomach inflammation or...

I went to see my consultant yesterday and we had a long discussion about how I can't tolerate certain medications because of my other medical conditions. I have fibromyalgia, chronic fatigue syndrome, irritable bowl syndrome, lactose intolerance, degenerative disc disease with 4 slipped discs...