In my work I sound like a broken record, "no sugar, no sugar substitutes, they are bad for you......" Sorbitol is also in topical facial and body lotions. So, this is an ingredient to be aware of. It is present in even many natural products that might seem otherwise like a good idea.
Later agave is a great natural sweetener that is not unhealthy for you, but, when you are ready!
Here is a nice article:
http://www.naturalnews.com/Index-Videos.html