A member asked:

Blood glucose level reaches 200 three hours after eating dinner. then insulin. how long should i wait to see the lowest possible near normal score?

A doctor has provided 1 answer
Dr. Donald Colantino answered

Specializes in Internal Medicine

Blood sugar: Rapid acting insulin lasts from 4-6 hours and reaches peak effect in 2-3 hours at which time your blood sugar would be at its lowest as a general rule. However if you had taken a long-lasting insulin earlier in the day, it would also be exerting an effect hours later. Your physician who knows your case best is also best qualified to answer your question.

Answered 5/23/2018

2.4k views

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