I have been regularly taking ibuprofen for pain relief after an orthopaedic procedure. Sadly it is not working but that is another story! I had this procedure 1 month ago and took ibuprofen every 4 hours for 5 days then stopped. A week ago the pain returned and I recommenced ibuprofen morning and evening. I have a follow up appointment in early October. Yesterday I had some digestive activity reminiscent of eating gluten and this morning I had stomach cramps after taking the pills. I found an old post about ibuprofen containing lactose but does anybody know if this medication contains anything like gluten? I have a GP appointment this morning.