I'm a type 1 diabetic and am feeling tired all the time despite sleeping. My diabetes is controlled but this is the worst I've ever felt. I'm on Lantus 22 and nova rapid 20 per meal. I used to be very very active and social person, but know don't go out because I'm tired. I read on the web that it is because of Lantus.
I would not attribute the fatigue you describe to the fact that you are taking Lantus. If your diabetes is truly well-controlled, it is important for you to see your primary care provider to look for other causes of fatigue. There are several medical conditions that can cause fatigue. Most are easily treated. What you should not do is continue to feel sick without seeking help.