Is Sorbitol Natural?

Sorbitol is a "sugar alcohol" that occurs naturally in various fruits (apples, peaches, nectarines, plums, grapes, cherries, apricots, pears, rose hips, berries, dates, coconut) at levels of 1% or more. Wasabi can contain up to 11%, and common dried fruits (prunes, pears) almost the same level. Of course, beer would be expected to have small amounts, as well. 

Sorbitol can be commericially produced from glucose. Non-GMO sources are available. 

In higher doses (30-50 grams) sorbitol can be laxative, but it is a useful non-cariogenic sweetener that doesn't promote dental caries (cavities).