Hi and welcome to Healingwell, Porch Monkey. As always, the best way to see if it is the food or supplement that affects blood sugar, the person has to test a lot. Your husband would have to keep detailed logs of his blood sugar for several days, what he eats, his readings before and post prandial (after eating) at two hours and three hours without any of the supplements as well as his activities, and then do the same trial while he takes them. Compare the differences. If he finds that they affect his blood sugar in a good way, then that's great but he absolutely needs to inform his doctor he's taking them.
Probiotics help with many things. He needs to be careful with tumeric, though, because if he's taking large quantities over a long period of time, it could affect his liver. And since each person is different, that amount would vary per person. Doctors schedule regular blood tests for diabetic patients, not only to check blood sugar levels but to check kidney and liver function.
There is a UC forum here which can also help you with your son's experience. Good luck!
Laniediabetes moderatordiabetes type 2 controlled by diet and exercise and
very low carb way of eating Check out the following site for more info on blood sugar:www.phlaunt.com/diabetes/