When is the best time to take day insulin?

Before food: Unless otherwise instructed, insulins are taken 15- 30 minutes BEFORE food with the exception of Insulin lispro which is to be taken less than 15 minutes before food.

What type?: It depends what type of Insulin you are taking. 24 hour acting Insulin is generally taken in the morning or night. Intermediate acting Insulin is normally taking in the morning and evening. Many of my patients have success taking once per day Insulin at night and in the morning.