One thing that my doctor has told me is to watch with taking the actos, januvia and the increase of glucotrol is to watch for symptoms of low blood sugar symptoms. My question and she has never been really able to answer for me what are symptoms of either high sugar levels? or low sugar levels? What should I watch for to know which symptom is for low or high? Far as I know I have never had any symptoms of diabeties so I really don't know what to look for.