For some people, long-acting insulin does not last the 24 hours as advertised (it can range from 16-26 hours). Splitting the dose can sometimes help cover that gap (you'll have 2 insulin profiles that overlap instead of just one).
I tried splitting my Lantus when I was on it but, that didn't work for me. I use Levemir now and inject it twice/day.
- Phishbowl (Type 1 since Jan'05 - Levemir, NovoRapid)
"What's Not Measured Is Not Managed"
"It is impossible for a man to learn what he thinks he already knows"-Epictetus