Insulin regular is used to treat diabetes by controlling blood sugar levels. It should be taken with an adequate diet plan and regular exercise to be effective. Controlling blood sugar can also help prevent nerve problems, kidney damage, loss of limbs, sexual function problems, and blindness. The use of insulin also reduces the risk of a stroke or heart attack. This artificial insulin works in the same way as human insulin. It is short-acting and helps glucose enter your cells so that your body can convert it into energy. This medication is usually taken with other oral diabetes medicines or a medium or long-acting insulin product.