Well it's a bit different....
One chlorine atom replaces an OH group on a sugar molecule. The chlorine is ATTACHED, it is not like free chlorine in your body. Because there is a chlorine there, your body's receptors cannot accept the fake sugar or break it down (which makes it 0 calories). So really the whole thing passes through your body undigested but hits the right spots on your tongue to make it taste sweet. Long term studies have not been done but it is NOT like other artificial sweeteners that can be bad (aspartame). That's where the phrase "made from sugar so it tastes like sugar" comes from. It's the same sugar molecule with one thing replaced.
I still would probably not give it to gliders because who knows how their body processes things, but know the chlorine is not a danger because it comes right out with the sugar you don't digest. Similarly, salt is sodium CHLORIDE, you don't get chlorine poisoning from salt, because the chlorine stays attached.