Some people in this thread respond to certain key words in a Pavlovian
manner without engaging in any actual thought.

Glycerine is one of those types of carbohydrate that, like fiber and
sugar alcohols, are absorbed in a low glycemic manner (for most people
most of the time)-- i.e. they increase blood sugar slowly enough to
avoid an insulin dump which is what lowcarbers who are not diabetic
look for, because an insulin dump will scrub your blood clean of the
energy it needs to run and store it as fat before you can burn any of
it, thereby making you hungry again and ultimately making you eat too
many calories to lose weight.

Diabetic lowcarbers approach lowcarbing for the exact opposite reason,
to control blood sugar, because their own insulin response is
impaired, so products that have lots of carbohydrates in them,
including sugar alcohols and glycerine, will raise blood sugar too
high if they eat too much.

Also, glycerine, like starch, is not  broken out separately on the
nutritional label, whereas sugar and fiber, and sometimes sugar
alcohols are.

The nutritional label is the black and white box.  The rest of the
product label is not required to conform to nutritonal label
standards, and can include advertising gimmicks, like drawing your
attention to the concept of 'net carbs'-- an idea not recognized by
the FDA by the way.

The product is not a medicinal food, therefore it is not required to
conform to medicinal label rules which are much more stringent (no
medical claims that are not proven true, etc).  Until and unless it is
re-classified as a medicinal food (and therefore probably only
available by prescription at an even more exhorbant price), any
claims outside the black and white box should be examined thoroughly
(rather than relied on blindly) and you should use your own judgement
about whether it meets your needs or not.

If you are diabetic, you should be aware that 'lowcarb' foods are not
diatetic foods and not formulated with your needs in mind.  The best
advice is still to eat to your meter.  (If you are not diabetic,
testing with a meter won't work, so you should watch for
unusual ---and repeatable-- cravings/hunger after eating anything with
a 'suspicious' substance in it-- an indication that you've released
more insulin than usual, or more quickly than usual).

--
revek
It startled him even more when just after he was awarded the Galactic
Institute's Prize for Extreme Cleverness he got lynched by a rampaging
mob of respectable physicists who had finally realized that the one
thing they really couldn't stand was a smart a.s. - The Hitchiker's
Guide to the Galaxy