Following on from the replies of the previous two respondents, I would also note that the prevailing viewpoint is that yes, diabetics can have a sugary snack - every now and then - and that it is actually better to have an ordinary snack with sugar in rather than the sugar free alternatives which offer no special benefit, are usually more expensive, and, perhaps most important of all, can often have a laxative effect. If you do buy a biscuit, cake, or chocolate which is sugar free, make sure you read the list of ingredients. If it contains polydextrose or something similar - watch out as this stuff is deadly. I would keep any such items in the fridge and eat them if you having a bout of constipation. Sugar derivatives, such as maltiol can also increase bowel movement frequency in some people so any items with these in should also be eaten sparingly.