When to adjust insulin in patients on Ozempic (semaglutide)?

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Last updated: June 12, 2025View editorial policy

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From the Guidelines

Insulin doses should be adjusted in patients on Ozempic (semaglutide) based on fasting finger-stick glucose test results, with a goal of 90–150 mg/dL (5.0–8.3 mmol/L), and adjustments made accordingly to prevent hypoglycemia and optimize glucose control. When adjusting insulin in patients on Ozempic, consider the following key points:

  • If 50% of the fasting finger-stick glucose values are over the goal, increase the dose by 2 units 1
  • If >2 fasting finger-stick values/week are <80 mg/dL (<4.4 mmol/L), decrease the dose by 2 units 1
  • Consider changing the timing of basal insulin from bedtime to morning, and titrate the dose based on fasting glucose results 1
  • For patients on premixed insulin, consider discontinuing prandial insulin and adding noninsulin agents, or decreasing the dose by 50% and adding noninsulin agents 1
  • Regular blood glucose monitoring and follow-up every 2-4 weeks during dose titration are crucial to make appropriate insulin adjustments based on glucose patterns 1
  • Patient education on recognizing hypoglycemia symptoms and treating low blood glucose immediately with 15g of fast-acting carbohydrates is essential 1
  • The mechanism of Ozempic as a GLP-1 receptor agonist, which enhances glucose-dependent insulin secretion, suppresses glucagon, and delays gastric emptying, can potentiate insulin's effects and requires careful insulin dose adjustments 1

From the Research

Adjusting Insulin in Patients on Ozempic (Semaglutide)

Overview of Treatment Intensification

  • When patients with type 2 diabetes are on basal insulin and require treatment intensification, options include adding prandial insulin or a GLP-1 receptor agonist like semaglutide 2, 3.
  • The choice of intensification strategy depends on various factors, including the patient's glycemic control, weight, and risk of hypoglycemia.

Role of Semaglutide in Treatment Intensification

  • Semaglutide, a GLP-1 receptor agonist, has been shown to be effective in improving glycemic control and reducing weight in patients with type 2 diabetes on basal insulin 4, 5.
  • Studies have demonstrated that semaglutide can be used as an add-on to basal insulin, with significant improvements in HbA1c levels and weight loss compared to basal-bolus insulin regimens 5.
  • Once-weekly semaglutide has been compared to fully optimized basal-bolus insulin in patients with type 2 diabetes, with results showing that semaglutide is associated with better glycemic control, weight loss, and reduced hypoglycemia 5.

Considerations for Adjusting Insulin

  • When adjusting insulin in patients on Ozempic (semaglutide), clinicians should consider the patient's individual needs and response to treatment 3, 6.
  • The dosage of semaglutide and basal insulin may need to be adjusted to achieve optimal glycemic control while minimizing the risk of hypoglycemia and weight gain.
  • Regular monitoring of HbA1c levels, weight, and hypoglycemic events is essential to guide treatment decisions and adjust the insulin regimen as needed 2, 4.

Key Findings and Recommendations

  • Studies have shown that semaglutide is a viable option for treatment intensification in patients with type 2 diabetes on basal insulin, offering improved glycemic control and weight loss with a lower risk of hypoglycemia 5, 6.
  • Clinicians should consider semaglutide as a potential add-on to basal insulin in patients who require treatment intensification, taking into account individual patient factors and response to treatment 3, 6.

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Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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