Insulin is typically delivered by a pump device that monitors patients blood sugar levels and doses accordingly. The pump is a medical device too that is manufactured by the drugco. It only accepts insulin vials from drugco.
It's like the inkjet printers that refuse to use ink from other vendors.
My insulin pumps take any insulin I fill it with. I’ve never heard of pumps that only take a specifically manufactured vial. Which one are you referring to?
Also, the pump manufacturer is not the same company as the insulin manufacturer.
It's like the inkjet printers that refuse to use ink from other vendors.