3 doctors weighed in:

How long does humalog (insulin lispro) insulin usually stay in your system after an injection?

3 doctors weighed in
Dr. Georgia Latham
Family Medicine
2 doctors agree

In brief: Short acting insulin

such as Humalog, (insulin lispro) generally begins lowering your blood sugar with 15 minutes of an injection.
Its peak action is between 30 minutes - 1.5 hours. It may still be having an effect on blood sugar for as long as 6 - 8 hours after an injection.

In brief: Short acting insulin

such as Humalog, (insulin lispro) generally begins lowering your blood sugar with 15 minutes of an injection.
Its peak action is between 30 minutes - 1.5 hours. It may still be having an effect on blood sugar for as long as 6 - 8 hours after an injection.
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