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  • Source: Campus Sanofi

When to Start People with Diabetes on Insulin

Key indicators and timing for insulin initiation in Type 2 diabetes care pathways

At Sanofi, we understand how difficult Diabetes Management can be. This guide can help you decide if insulin is the right path for you and your patients.

When to start patients on insulin¹

 

Offer basal insulin as the initial insulin therapy to adults with type 2 diabetes. Consider combining basal and short acting insulin as the initial insulin therapy for adults with type 2 diabetes, especially if the person's HbA1c is 75 mmol/mol (9.0%) or higher. This should be injected either separately or as a pre-mixed (biphasic) preparation.

 

Practical information for starting patients on Toujeo (insulin glargine U/300mL)¹

NICE guidelines advise providing a structured education programme to adults with type 2 diabetes starting insulin therapy. The programme should include:

  • Injection technique, including rotating injection sites and avoiding repeated injections at the same point within sites

  • Self-monitoring

  • Dose titration to target levels

  • Dietary advice

  • Managing hypoglycaemia

  • Managing acute changes in plasma glucose control

  • Support from a healthcare professional trained in insulin therapy.

 

When initiating insulin for adults with type 2 diabetes:

  • Continue to offer metformin to people already taking it

  • Stop any other medicines being used solely to manage hyperglycaemia

  • Discuss with the person the risks and benefits of continuing medicines for other benefits such as cardiovascular protection or weight management 

 

Choosing an insulin¹

Make a shared decision with the person on the choice of basal insulin preparation, based on considerations that are specific to them, including whether:

 

  • The person needs help from a carer or healthcare professional to inject insulin or

  • There is a particular concern about nocturnal hypoglycaemia or

  • The person has a strong preference for once-daily injections.

References:

  1. National Institute for Health and Care Excellence. Type 2 diabetes in adults: management. NICE guideline DRAFT [NG28]. 2025.

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MAT-IE-2600035 (v1.0) Date of Preparation: February 2026