I have been taking invokana 100 mg, along with januvia100 mg, once a day and metformin 1000 mg twice a day. i just started invokana about one week , but my blood sugar fasting is not changed at all. my fasting sugar is 150. and no weight loss, . i am more concerned that blood sugar is not changed at all. before taking medicine my fast sugar was in same range. i hope you can help.