What is the volume in milliliters of semaglutide (Ozempic) 0.25 mg to be administered using a 100 unit insulin syringe, given a concentration of 4 mg per 3 milliliters?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Article Review Status
Submitted
Under Review
Approved

Last updated: March 29, 2025 • View editorial policy

From the Research

To administer 0.25 mg of semaglutide (Ozempic) using a 100-unit insulin syringe, you would need to draw up 0.1875 mL, which equals 18.75 units on the insulin syringe. The calculation is based on the concentration of 4 mg per 3 milliliters, which means each milliliter contains 1.33 mg of medication. Therefore, to get 0.25 mg, you need 0.25 ÷ 1.33 = 0.1875 mL. On a 100-unit insulin syringe, where each unit represents 0.01 mL, you would draw up to the 19-unit mark (rounding up slightly from 18.75) 1. However, it's essential to note that Ozempic comes in pre-filled, dose-adjustable pens specifically designed for self-administration, not for drawing up with insulin syringes. The pen has its own dosing mechanism that should be used according to your healthcare provider's instructions. Using insulin syringes with Ozempic pens is not recommended as it may lead to dosing errors and potential contamination of the medication. Some studies have discussed the pharmacokinetics and clinical implications of semaglutide, including its use in patients with type 2 diabetes mellitus 2, 3. Additionally, research has explored the factors influencing pain sensation at the injection site, which may be relevant when administering semaglutide via injection 4. Nevertheless, the most recent and highest-quality study on the topic of semaglutide administration does not specifically address the use of insulin syringes for drawing up the medication 5. Given the potential risks and the availability of pre-filled pens, it is crucial to follow the recommended administration guidelines for Ozempic to ensure safe and effective use. Key points to consider:

  • Ozempic comes in pre-filled, dose-adjustable pens for self-administration.
  • Using insulin syringes with Ozempic pens is not recommended due to potential dosing errors and contamination.
  • The calculated volume for 0.25 mg of semaglutide is 0.1875 mL, equivalent to 18.75 units on a 100-unit insulin syringe.
  • It is essential to follow the recommended administration guidelines for Ozempic to ensure safe and effective use.

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.