Sugar alcohols have been used for years. After careful review, scientists have concluded that they are safe for human consumption. In the United States, the Food and Drug Administration (FDA) classifies some sugar alcohols as Generally Recognized as Safe (GRAS) and others are approved as food additives.
For some people, consuming certain sugar alcohols in excessive amounts may cause gastrointestinal upsets such as gas, bloating and diarrhea. Whether or not you will experience problems will depend on your individual sensitivity level and the other foods you consume at the same time. It is best to find your individual tolerance level when using these food ingredients, and to avoid them if they cause discomfort.