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Real members of DiabetesTeam have posted questions and answers that support our community guidelines, and should not be taken as medical advice. Looking for the latest medically reviewed content by doctors and experts? Visit our resource section.
A DiabetesTeam Member asked a question 💭
Dundee, UK

I'm changing my Once a Day insulin injection. From Humulin L to Toujeo 300.
Do I dual in the same number of units on the pen?

April 1, 2025
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A DiabetesTeam Member

It is not like for like. They are different. Keep what they said in mind. But understand they are different.

April 2, 2025
DiabetesTeam

No, you should not automatically use the same number of units when switching from Humulin L to Toujeo. Toujeo is an ultra long-acting insulin that works differently than other insulins, lasting about 36 hours or longer. The dosing needs to be specifically calculated for your situation by your healthcare provider. When Show Full Answer

No, you should not automatically use the same number of units when switching from Humulin L to Toujeo. Toujeo is an ultra long-acting insulin that works differently than other insulins, lasting about 36 hours or longer. The dosing needs to be specifically calculated for your situation by your healthcare provider. When changing insulin types, it's essential to work closely with your doctor to calculate the proper doses and set up an appropriate schedule. They will help adjust the dosage over time to maximize effectiveness and ensure your safety. Remember to rotate injection sites to prevent small lumps from forming under the skin that could affect how the insulin is absorbed.

April 1, 2025
A DiabetesTeam Member

My GP and specialist nurse said to go like for like!

April 2, 2025
A DiabetesTeam Member

@A DiabetesTeam Member you need to discuss this with the prescribing doctor

Humulin L is an intermediate acting insulin while the Toujeo is a long acting insulin where the Humulin works quicker and harder while the new will be slower and longer - so quite different which will need specific dosage changes

April 1, 2025

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