Is wheat gluten and fiber safe to eat if you suffer from irritable bowel syndrome?

It depends.: It depends on whether or not you can eat gluten containing foods. If you can, it is likely ok. But if you have a problem, then avoid those foods. You might need to avoid lactose foods, like milk. Avoiding stress and an overall high fiber, bland diet would help a great deal if not already done. A visit to your doctor to get tested, and work out therapy can help.