because it is just vitamin c or are the not allowed to have vitaminc

ABSOLUTELY! In fact, without vit. C they will develop Scurvy. We used to believe that gliders - like most animals except guinie pigs - could synthesize their own vit. C. But now we are beginning to have a better understanding of gliders and vit. C. I have a rescued glider that was the first one to be diagnosed with Scurvy. Since that controversial diagnosis, we now think that many of the teeth issues that we are seeing so prevalently in gliders now can be linked to vitamin C intake - or lack of, I should say. It seems that some gliders need more vit. C in their diet than we thought.

When Cheddar was diagnosed, his symptoms were: Lethargy, loss of appetite, slow movement, weight loss, thinning fur.... can't remember the rest without my notes. But, when I had him anesthesized, we found that his gums were bleeding and that all 40 of his teeth were loose and abscessed. You certainly do not want this to happen to your baby.