I use it daily with my Miracle-Mineral-Supplement and wheat grass powder. It is widely recognized as safe for candida and bacterial issues. It won't feed these organisms, in fact it is a mild preservative meaning it has some anti-septic value.
This is the only sweetener I use, and have done so for at least a year now. It draws in water molecules and is well known to increase blood volume drawing water deeper into muscle tissue. (so I have read) In fact the military uses it often, as they did during the golf wars to prevent dehydration.
The one downside with regard to Miracle-Mineral-Supplement is that it will help you retain water longer, so if you are consuming glycerin every time you consume water you might slightly hinder your detox pathway as it will take a little longer to leave your system. My opinion is that if you continue drinking water throughout the day, this is negligible. I have a theory that the consumption of glycerin with the Miracle-Mineral-Supplement blended water might turn out to enhance the dose, so long as you consume non-glycerin water throughout the remainder of the day.