@bear78-- That's a good question. This topic is kind of controversial right now unfortunately. Some earlier studies had shown that glucosamine supplements increase blood sugar and diabetics were warned not to use them. Some latest studies have shown that glucosamine has little to no effect on blood sugar levels.
I personally think that the results vary from individual to individual. I have type 2 diabetes too and have been using glucosamine chondroitin supplements since two weeks. I have been checking my blood sugar and it seems normal. But I have heard from others that glucosamine increased their blood sugar a little bit.
So I guess it depends. You should probably give it a try and keep a close eye on your blood sugar levels to see what happens. Also, ask your doctor about this and don't take more than the recommended dose.