Starting Insulin in Type 2 Diabetes: A Practical Guide for Nurse Practitioners

Starting insulin in type 2 diabetes can feel intimidating—especially when you’re a new NP looking at an A1C of 12%, 13%, or 14% and wondering: Does this patient need insulin? Can I safely manage this outpatient? And if I start insulin, how much do I actually prescribe?

In this updated episode, I walk through a practical approach to starting basal insulin in adults with type 2 diabetes, based on current ADA and AACE guidance. We’ll cover when to consider insulin, when severe hyperglycemia may need a higher level of care, how to calculate a starting basal insulin dose, how to titrate using fasting blood glucose, and how to support patients as they learn a completely new skill.

We’ll also talk about CGM and glucose monitoring, preventing hypoglycemia, and patient education so patients can safely and realistically manage their diabetes at home.

Want a quick desk reference for this topic? The Starting Insulin in Type 2 Diabetes Cheat Sheet is fully updated to include 2026 guidelines and is included in the Digital NP Binder. For more comprehensive support with managing type 2 diabetes in primary care, including choosing and adjusting medications and insulin therapy, see the Diabetes Management in Primary Care course, updated in 2026.

 

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What I Covered in This Episode:

  • When insulin may need to be considered in a patient with type 2 diabetes

  • How to start basal insulin, including fixed-dose and weight-based approaches

  • Using fasting blood glucose to guide basal insulin titration

  • How often insulin doses may need to be adjusted

  • What to do when a patient develops hypoglycemia

  • Why insulin initiation often requires close follow-up and patient education

  • How to use shared decision-making without overwhelming patients with everything at once

Key Takeaways

  • Basal insulin is usually the simplest place to start when insulin is being initiated in type 2 diabetes.

  • Starting insulin is only part of the job. Patients also need to know how to use it, how to monitor glucose, and what hypoglycemia looks like.

  • Fasting glucose helps guide basal insulin titration, but treatment goals should be individualized rather than using the same target for every patient.

  • Insulin initiation can be overwhelming. Breaking education and treatment changes into manageable steps can make it much easier for patients to follow through.

  • Close follow-up matters, particularly while the patient is learning insulin administration and the dose is being adjusted.

  • Shared decision-making is especially important in diabetes care because patients are the ones managing this condition every day.

Resources mentioned in this episode:


Want More Support Managing Type 2 Diabetes?

The Diabetes Management in Primary Care course walks you through how to manage type 2 diabetes in real-world primary care—including choosing medications, adjusting treatment when patients aren’t at goal, initiating and titrating insulin, monitoring treatment, and knowing what to do next.


Original Episode: Starting Insulin in Type 2 Diabetes

In this original episode, I walk through the practical side of starting basal insulin with a patient for the first time—from calculating a starting dose and using fasting blood sugars to guide titration to monitoring for hypoglycemia and providing close follow-up.

A big focus of this episode is also how to make insulin initiation manageable for patients: breaking down a lot of new information into smaller steps, adjusting the plan to the patient's health literacy and comfort level, and using shared decision-making rather than trying to accomplish everything in one visit.

2026 note: This episode was recorded in 2020, and the type 2 diabetes treatment algorithm discussed at the beginning is outdated. In particular, don't use this episode to guide which medications should be used before insulin or when insulin should be initiated. For current recommendations on when to consider insulin and how it fits into type 2 diabetes treatment, start with the updated episode above.

 
 

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© 2026 Real World NP. For educational and informational purposes only, see realworldnp.com/disclaimer for full details.

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