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Rapid-acting insulin is a form of insulin for managing glucose (blood sugar) levels in people with type 1 diabetes. The U.S. Food and Drug Administration (FDA) has approved types of rapid-acting insulin including insulin aspart (Fiasp, NovoLog), insulin glulisine (Apidra), and insulin lispro (Admelog, Humalog).

Rapid-acting insulin is designed to control glucose levels quickly, typically starting to work within minutes. It’s usually given around mealtimes to manage blood sugar spikes after eating.

How do I take it?
Rapid-acting insulin is usually given as a subcutaneous injection (under the skin). It’s important to follow your health care provider’s guidance on dose and timing.

Side effects
Common side effects of rapid-acting insulin include hypoglycemia (low blood sugar), injection site reactions, vision changes, and changes in fat tissue at the injection site.

Rare but serious side effects include severe hypoglycemia and allergic reactions.

For more details about this treatment, visit:

About Rapid-Acting Insulin — NHS

What’s the Difference Between Rapid-Acting and Long-Acting Insulins? — GoodRx Health

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