Reusable vs disposable: what does it actually cost?

A reusable pen costs more once and less afterwards. Whether that is worth it depends entirely on how often you inject and what you currently pay, so this uses your numbers rather than ours.

If a disposable pen works out cheaper on your figures, this will say so.

Your numbers

Injections per week

How often you inject.Price of one disposable pen

What you pay today, per pen.Injections from one disposable pen

How many injections you get before it is empty.Price of one 3 mL cartridge

We do not sell cartridges, so this is your own price.Injections from one cartridge

Same measure, for the cartridge.Price of the reusable pen

Enter the price of the reusable pen you are considering.

What that works out to

Enter the price of the reusable pen, a disposable pen price and a cartridge price to see the comparison.

What this does and does not account for

It compares device economics only. It cannot know your prescription, insurance or pharmacy pricing.
We do not sell cartridges, so that price is yours to supply and we have no reason to flatter it.
It assumes the reusable pen lasts the whole period, which is the point of a metal pen but not a guarantee.
Shipping is excluded on both sides. Ours is a flat $2.99 in the USA.

The longer version of this comparison, with the parts that do not show up on a receipt, is in a year with a reusable pen and the real cost over a year.

MediNorsk sells injector pen hardware only. This calculator is general cost information, not medical or financial advice. Always follow the instructions included with your device and your healthcare provider's guidance for any injection routine.