Just take the net carb figure 2.1g. Because Atkins is an American brand they label differently, if you look at the back the fibre is included in the Carb nutrition & has to be deducted which gives you the net carb figure... in the UK the fibre is already deducted & we just count the total carbs on packaging. x
This rule also applies to anything containing polyols, malitol & sugar alcohols as they all have no affect on blood sugars. HTH. x