The primary activity of insulin including Humalog Mix50/50 is the regulation ... Do not reuse or share pens, needles, cartridges, or syringes between patients, even if the needle is changed.

But it looks unlikely that Lilly will be able to maintain this with the launch of Humalog, which is available in vial form or as a disposable pen. Sanofi fights back This represents Sanofi's first ...

Insulin lispro, the rapid-acting component of Humalog Mix75/25 ... Do not reuse or share pens, needles, cartridges, or syringes between patients, even if the needle is changed.