Hi ubdkjrb,
Welcome to the forum, glad to have you along. This is a great place for information and support. Everyone is pretty cool too.
If you look on the side of your pen it should tell you what kind of insulin it is. The brand name will probably be either Lantus or Levemir. Those are the two most popular long-acting insulins out there right now. When I took Lantus I took from 36-42 units a night but it really does vary a lot. I've heard everywhere from 2 units to over 100.
Do you happen to know if you are Type 1 or Type 2? I'd assume T2 if you're not taking any insulin with meals during the day. Does the doctor have you on any other meds, either injections or pills? Is this a general doctor or an endocrinologist?
-Jade
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Diagnosed 11/16/2007 - Hospitalized with severe DKA.
11/16/2007 A1C - 12.8

01/16/2008 A1C - 7.5
Pumping with Minimed 722 and CGMS since 2/26/2008.
Previously used Novolog in Flexpen and Lantus in Solostar Pen.