Long-acting insulin is growing in popularity as it allows people with diabetes to maintain safe blood sugar levels for lengthy periods of time—sometimes throughout entire days. While not appropriate for all patients, this type of insulin can be a liberating option for diabetes sufferers who continue to lead active lives. With this type of treatment, the insulin is delivered in a steady manner unlike alternatives such as rapid and slow-acting insulins. In some cases, your doctor may pair a long-acting insulin with a rapid or short-acting method for complete and effective therapy. The most commonly used types of this insulin are Lantus, Levemir, Tresiba, and Toujeo. Read on to learn more about this option for managing blood sugar levels.


Patients who are looking for a long-acting insulin that does not cause any peaks or valleys in their blood sugar often turn to Lantus with good results. This effective treatment offers blood sugar management for a 20 to a 24-hour period with an onset at one to one and a half hours. It is a popular choice for patients who lead active lifestyles and enjoy the freedom of once-a-day insulin administration. Your doctor may also prescribe a rapid or short-acting medication to complement this course of treatment.


Levemir is a long-acting option that can last up to a full 24-hour period. Many patients do not like the fact that it takes one to two hours to become effective and that it peaks at six to eight hours, thereby causing a change in blood sugar levels. This medication is a good option for patients who have mild to moderate diabetes and are looking for a treatment option that creates less of an impact on their system. The main benefit of Levemir is that it is a stand-alone treatment that does not require the patient to also rely on a short or rapid-acting insulin.


This long-acting option is nearly double in its effective duration than the other types of this medication. At slightly over 40 hours this is a good option for people who are traveling, have difficulty taking medication on a daily basis, or are simply looking for a treatment option that offers a higher level of freedom and flexibility. The medication takes between 30 and 90 minutes for its effects to be felt and it offers continuous treatment on a stable level without any peaks for valleys. Tresiba is an excellent choice for many patients.


Patients who remain active in spite of their diabetes often find insulin administration to be disruptive to their daily routine. Toujeo offers them an option that can last between 20 and 24 hours and does not have any peaks of insulin delivery. The insulin is released in a steady stream throughout the day and does not cause jarring peaks. The drug may require a complementary medication, such as a short or rapid-release insulin to remain effective. If you are considering a long-acting insulin such as Toujeo, speak with your doctor to better understand how this medication may affect you.