Lantus Pen Volume
Lantus (insulin glargine) auto pen injectors contain 3 mL of insulin at a concentration of 100 units/mL, providing a total of 300 units of insulin per pen. 1
Pen Specifications
- Each Lantus SoloStar prefilled pen is a 3 mL single-patient-use device containing 100 units/mL (U-100) insulin glargine 1
- The total insulin capacity per pen is 300 units, which can be used for multiple injections 1
- The pen allows dose selection from 1 to 80 units in single-unit increments 1
- The pen plunger moves with each dose and will only reach the end of the cartridge when all 300 units have been administered 1
Important Clinical Context
- Lantus is also available as a 10 mL multiple-dose vial containing 100 units/mL 1
- Standard insulin pens typically contain 300 units (3 mL of U-100 insulin) per cartridge or prefilled pen, which is consistent across most insulin pen products 2
- The maximum single-dose capacity for most standard insulin pens, including Lantus SoloStar, is 60-80 units per injection 2, 1
Key Safety Considerations
- Never share insulin pens between patients, even if the needle has been changed, due to risk of serious infection transmission 1
- Do not use a syringe to remove insulin from the pen, as this can lead to dosing errors 1
- Each pen should be removed from refrigeration at least 1 hour before injection, as cold insulin is more painful to inject 1