Answer:
If you take Regular insulin or a longer-acting insulin, you should generally take it 15 to 30 minutes before a meal. If you take insulin lispro (brand name: Humalog), which works very quickly, you should generally take it less than 15 minutes before you eat.
Explanation:
Over time, high blood sugar levels can cause serious health problems. All people with type 1 diabetes, and some people with type 2 diabetes, need to take insulin to help control their blood sugar levels