The best time to administer Humalog® is just before your meal, preferably about 30 minutes before eating. Your healthcare provider may recommend a different time of day for you to take Humalog® (see “What does Humalog® look like?” below). Do not take more than the recommended dose at one time. If you are using both insulin and Humalog®, use only one type at each mealtime. Mixing types can cause serious problems with your blood sugar control (diabetes). It may be possible that you could lose too much weight if you take too many doses of insulin or mix it with other medication that raises your blood sugar levels (metformin) or medicine that lowers them (phenobarbital, rifampicin, St Johns Wort).
How do I know how much I should be taking?