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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Can Lantus Be Taken After Taking Novolog?

I usually take 23 units of Lantus at bedtime. I realized when I started to feel bad that I had accidently took my Novolog instead. My sugar was 33. After 3 juice boxes and a bowl of cereal (about 100 grams of carbs) 30 minutes later I am back up to 89. Should I still take my Lantus and how long should I keep checking my sugar to make sure it doesn t drop.
Mon, 23 Jul 2018
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Internal Medicine Specialist 's  Response
Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.

Novolog (Insulin Aspart ) onset of action Lantus (Glargine ) onset of action 2–4hr ;no peak action ; duration of action 20-24 hr.
Hence Injection Lantus can be taken only after lapse of 4 hours from Injection Novolog. To check blood sugar after 2 hours and then at four hours after Injection Lantus.

Hope I have answered your query.
Let me know if I can assist you further.



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Can Lantus Be Taken After Taking Novolog?

Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Novolog (Insulin Aspart ) onset of action Lantus (Glargine ) onset of action 2–4hr ;no peak action ; duration of action 20-24 hr. Hence Injection Lantus can be taken only after lapse of 4 hours from Injection Novolog. To check blood sugar after 2 hours and then at four hours after Injection Lantus. Hope I have answered your query. Let me know if I can assist you further.