I've not had these since I was a very small child... however they're quite compact and have a lot of calories. I am currently urgently in need to gain weight, I am using a lot of peanut butter, porridge, Ensure milkshakes etc... however it's not quite enough and I need something to snack on. Healthy or not. So I don't care about the sugar content etc as I know they're unhealthy. I'm just concerned about whether they are IBS safe. I have predomenantly IBS D however it can flick between D and C, especially with my poor eating and my stomach has shrunk from illness.