Types of Insulin
Topic OverviewInsulin is used to treat people who have
diabetes. Each type of insulin acts over a specific
amount of time. The amount of time can be affected by exercise, diet, illness,
some medicines, stress, the dose, how you take it, or where you inject it.
The table below is a general guide. Your results may be different. Insulin strength is usually U-100 (or 100 units of insulin in one milliliter of fluid). Short-acting (regular) insulin is also available in U-500. This is five times more concentrated than U-100 regular insulin. Long-acting insulin (glargine) is also available in U-300. This is three times more concentrated than U-100 long-acting insulin. Be sure to check the concentration of your insulin so you take the right amount. Insulin is made by different companies. Make sure you use the same type of
insulin consistently. Types of insulinType | Examples | Appearance | When it
starts to work (onset) | The time
of greatest effect (peak) | How long it lasts
(duration) |
|---|
Rapid-acting insulins work over a
narrow, more predictable range of time. Because they work quickly, they are used most often at the start of a meal. Rapid-acting insulin acts most like insulin
that is produced by the human pancreas. It quickly drops the blood sugar level and
works for a short time. If a rapid-acting insulin is used instead
of a short-acting insulin at the start of dinner, it may prevent severe drops in blood sugar level
in the middle of the night. | Apidra (glulisine), Humalog (lispro), Novolog (aspart) | Clear | 5-30
minutes | 30 minutes-3 hours | 3-5 hours | Rapid-acting insulin also comes in a form that can be inhaled through the mouth. | Afrezza (insulin human, inhaled) | Contained in a cartridge | 10-15 minutes | 30-90 minutes | 2½-3 hours | Short-acting insulins take effect and wear off more quickly than
long-acting insulins. A short-acting insulin is often used 30 minutes before a meal so that it has time to work. These liquid insulins are clear and do not settle out when
the bottle (vial) sits for a while. | Humulin R, Novolin R (insulin regular) | Clear | 30 minutes | 3 hours | 4-12 hours (U-100), Up to 24 hours (U-500) | Intermediate-acting insulins contain added substances (buffers) that
make them work over a long time and that may make them look cloudy. When these types of
insulin sit for even a few minutes, the buffered insulin settles to the bottom
of the vial. | Humulin N, Novolin N (insulin
NPH) | Cloudy | 60-90
minutes | 4-12
hours | 14½ hours | Long-acting insulins have no peak and last for up to 24 hours. | Lantus (glargine), Levemir (detemir) | Clear | 3-4
hours | None | Up to 24 hours | Ultra Long-acting insulins have no peak and last for 24 hours or more. | Toujeo (glargine U-300), Tresiba (degludec U-100 and U-200) | Clear | 6 hours (glargine), 1 hour (degludec) | None | 24 hours or more (glargine), 42 hours or more (degludec) | Mixtures of insulin can sometimes be combined in the same syringe, for example, intermediate-acting and rapid- or short-acting insulin. Not all insulins can be mixed together. For convenience, there are premixed rapid- and intermediate-acting insulin. The insulin will start to work as quickly as the fastest-acting insulin in the combination. It will peak when each type of insulin typically peaks, and it will last as long as the longest-acting insulin. Examples include: - 70% NPH and 30%
regular (Humulin 70/30, Novolin 70/30).
- 50% lispro protamine and 50% lispro (Humalog Mix 50/50).
- 75% lispro protamine and 25% lispro (Humalog Mix 75/25).
- 70% aspart protamine and 30% aspart (NovoLog Mix 70/30).
- 50% NPH and 50% regular (Humulin 50/50).
ReferencesOther Works Consulted- Insulin degludec injection (2015). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/MonoDisp.aspx?monoid=fandc-hcp19982&book=DFC&fromtop=true&search=580363%7c24&isStemmed=True&asbooks=. Accessed December 30, 2015.
- Insulin detemir injection (2014). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/PrintMonoDisp.aspx?id=fandc-hcp14499§ions. Accessed May 13, 2015.
- Insulin glargine (rDNA origin) injection (2015). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/PrintMonoDisp.aspx?id=fandc-hcp12721§ions. Accessed May 13, 2015.
- Insulin glulisine (rDNA origin) injection (2014). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/PrintMonoDisp.aspx?id=fandc-hcp13023§ions. Accessed May 13, 2015.
- Insulin isophane (NPH)/insulin regular injection (2013). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/PrintMonoDisp.aspx?id=fandc-hcp12321§ions. Accessed May 13, 2015.
- Insulin isophane injection (2014). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/PrintMonoDisp.aspx?id=fandc-hcp12320§ions. Accessed May 13, 2015.
- Insulin lispro injection (2014). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/PrintMonoDisp.aspx?id=fandc-hcp12722§ions. Accessed May 13, 2015.
- Insulin regular (human) inhalation (2015). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/PrintMonoDisp.aspx?id=fandc-hcp19696§ions. Accessed May 13, 2015.
- Insulin regular (human) injection (2015). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/PrintMonoDisp.aspx?id=fandc-hcp12645§ions.
Accessed May 13, 2015.
CreditsByHealthwise Staff
Primary Medical ReviewerE. Gregory Thompson, MD - Internal Medicine
Kathleen Romito, MD - Family Medicine
Adam Husney, MD - Family Medicine
Specialist Medical ReviewerDavid C.W. Lau, MD, PhD, FRCPC - Endocrinology
Rhonda O'Brien, MS, RD, CDE - Certified Diabetes Educator Current as ofMarch 13, 2017 Current as of:
March 13, 2017 Last modified on: 8 September 2017
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