- Lantus vials -- 10 mL, with 100 units of insulin per mL
- Lantus SoloSTAR® -- 3 mL per pen, with 100 units of insulin per mL.
Lantus was once available in cartridges meant for use in the reusable Opticlik® pen. However, the manufacturer has discontinued this product.
The SoloSTAR pen is disposable, which means you throw it away after it is empty or after 28 days of use, whichever comes first. It is not refillable.
(Click Lantus Dosage to learn more about how to use SoloSTAR Lantus pens. This article also explains how certain medical conditions can affect your dosage and talks about the proper way to inject your dose of Lantus.)