My biggest issue is my meds. I went off two of my OTC ones. The undenatured whey was the hardest. It really helps my asthma. I had to switch my OTC antihistamine so it didn't contain corn starch. Sadly now it contains sorbitol. You just can't win. But I can't go off some of my prescription meds and two of them contain lactose. So the diet isn't perfect. I did switch my toothpaste too. Most have carageenan in them. Whether it is a problem or not is debatable, but if it is a problem, what it does is inflame the gut and the whole point of this exercise is to heal the gut. I took it out.
Another big issue is cross contamination. My husband snacks on whole grain crackers that were kept on the kitchen counter. The crumbs get all over the place. Ie all over the fruit in the bowl, the counter, my inhaler. Not good for me. I don't know of the other proteins are as bad, but I know even a little wheat contamination can keep you from healing up at all if wheat is your issue. And to a certain extent even if it isn't as wheat makes everyone's gut a little more permeable for a short time after eating it. So I really have to keep the cross contamination to zero.
All in all the diet isn't that hard to follow. But I'm used to cooking from scratch to start with so not much has changed except the lack of variety. I'm guessing it will get a little boring over time. But I only have to follow it for a month before I start putting things slowly back in. I thought the hardest thing to give up would be my nightly indulgences. Chocolate and an after dinner drink. Instead I've been eating these yummy little yellow mangoes for dessert. Or occasionally an apple or banana. So it has been OK. Though I've been having the hugest craving for cinnamon rolls. I think there is nothing in a cinnamon roll I can have except the cinnamon. Sugar, wheat, and dairy are all forbidden.