Protein Bar hidden cals?

[MeLo]

Recently i bought a box of protein bars. nitro-tech protein bars. they come in at this
:290 cals
:35g Protein
:6g Fat
:5g carbs

they all add up to only 214 cals. i wonder where the rest comes from... i read recently that there's plenty of glycerine in them. i wonder how will the protein bars help me, in terms of it's nutrition value, and how should i go about using them. because it says only 5g of impact carbs. im pretty worried about using it...

 

[Mudge]

Probably sugar alcohols/sweetners like honey that they dont count because its not 'sugar' however labeling laws have required that for about a year now(?)

 

[Twin Peak]

The balance is usually from "non-impact" carbs which are those described by Mudge above. So just count them as carbs.

Of course, this assumes the bar is meeting label claims.