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9 Factors That Affect How Insulin Works
What time did you inject?
Insulin is often taken just before eating (though it depends on the type) because it works best when the glucose from food starts to enter your blood.
"You want insulin to be coming up to its peak right when your food is being digested,” says Christine Tobin, RN, a certified diabetes educator (CDE) and the president of health care and education at the American Diabetes Association.
Depending on the onset and duration of your insulin, experts recommend you inject either right before eating or 20 to 30 minutes before a meal.
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