Rapid-acting Insulin - Benefits and Usage

Rapid-acting insulin is a type of insulin that is fast-acting and is used to control blood sugar levels quickly. It is often taken before meals to manage post-meal blood sugar spikes.

Rapid-acting Insulin FAQ

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What is a rapid acting insulin?

Rapid acting insulins are usually taken just before or with a meal. They act very quickly to minimise the rise in blood sugar which follows eating. Rapid acting insulins are commonly prescribed to people with type 1 diabetes , however, there may be times when they can be prescribed for type 2 diabetes as well.

What is fast-acting insulin?

Fast-acting insulins (sometimes called rapid-acting or short-acting insulin) are usually taken just before you eat or drink something that has carbohydrates in it. This insulin minimises the rise in blood sugar after you eat or drink. It’s also known as bolus or mealtime insulin. Types of rapid-acting insulin in the UK include:

Can you take rapid acting insulin if you have type 2 diabetes?

Rapid acting insulins are commonly prescribed to people with type 1 diabetes , however, there may be times when they can be prescribed for type 2 diabetes as well. As rapid acting insulins act very quickly, they can lead to an increased chance of hypoglycemia Care should be therefore taken when dosing.

How long does rapid-acting insulin last?

Rapid-acting insulin starts to work after about 10 to 20 minutes and lasts for up to 5 hours. You'll usually take it around 15 minutes before a meal but it can be taken up to 10 minutes after a meal. Your doctor or diabetes nurse will tell you how much rapid-acting insulin to take.

When should I take rapid acting insulin?

You'll usually take a dose of rapid acting insulin around 10 to 15 minutes before each meal. Your doctor or diabetes nurse will advise you on when to take it. The exact timing may depend on which brand you take. See what timing works best for you and try to stick to it as closely as possible.