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I was on Novarapid for 12 years. Like you, I took Lantus before I went to bed and often went low in the night. Then I started to look at the profile of Lantus. Although Lantus is sold as a 24 hour flat profile (it is consumed at a constant rate), this is not strictly true: it rises after 1 hour with a peak at 6 hours and last 18 to 26 hours. (Take a look at http://www.diabetesnet.com/about-diabetes/insulin/insulin-action-time.)
In other words, if you take Lantus at 10pm, you are likely to get a low around 4am.
I overcame this by taking Lantus with my evening meal (about 7:30pm) and going to bed (around midnight) with a BG between 7 and 8mmol/l. With this regime, I avoided night time hypos and awoke with a BG around 5mmol/l.
Incidentally, I have written this in the past tense because I am now a pumper which allows me to change the basal profile to match the needs of my body.
In other words, if you take Lantus at 10pm, you are likely to get a low around 4am.
I overcame this by taking Lantus with my evening meal (about 7:30pm) and going to bed (around midnight) with a BG between 7 and 8mmol/l. With this regime, I avoided night time hypos and awoke with a BG around 5mmol/l.
Incidentally, I have written this in the past tense because I am now a pumper which allows me to change the basal profile to match the needs of my body.