# Can I refill Novo Nordisk cartridges (Novorapid, Tresiba, Ryzodeg...)?

**URL:** <https://forum.fudiabetes.org/t/can-i-refill-novo-nordisk-cartridges-novorapid-tresiba-ryzodeg/16399>\
**Category:** Gear\
**Created:** [October 3, 2026, 5:11am UTC](https://forum.fudiabetes.org/t/can-i-refill-novo-nordisk-cartridges-novorapid-tresiba-ryzodeg/16399 "2026-10-03T05:11:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![atom9549](https://avatars.discourse-cdn.com/v4/letter/a/a5b964/32.png) [@atom9549](https://forum.fudiabetes.org/u/atom9549)\
**Post date:** [October 3, 2026, 5:11am UTC](https://forum.fudiabetes.org/t/can-i-refill-novo-nordisk-cartridges-novorapid-tresiba-ryzodeg/16399/1 "2026-10-03T05:11:15Z")

</div>

I have 2x Novopen 4 pens. I was on Tresiba and Novorapid. For financial reasons. I moved onto Mixtard HM 30/70 10ml vials with syringes, and boy they hurt. So I’m trying to find middle ground.

I’d like to get a cartridge of Mixtard hm 30/70, refill it from the vial and use the more comfortable 32G needles.

While I saw the post about refilling other pens, I was unable to find confirmation for the viability of refilling novopen cartridges.

If you’ve tried it, can you share your experience?

* * *

My last option is to buy Biocon’s Insupen Pro. It seems to be compatible with empty peptide pen cartridges.

I’m not sure what to do. Please help.

Thanks.