GLP-1 Forum

the best pen vial spacer, uh-huh

3Ljeffy

GLP-1 Novice
Member Since
Sep 3, 2025
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Seattle
TL;DR: https://www.amazon.com/dp/B08LCXCN5W? = perfect pen spacers for 3ml vials.
No it is not an affiliate link, and I have no connection/benefit; whoTF is uxcell(tm) anyway?

OKAY... I reckon' this is the tiniest possible little bit of helpful kit to recommend:
Anyone using injection pens is probably familiar with the issues of some of the V1 and other pens, where the plunger doesn't quite reach full depth, wasting as much as 20u or more of whatever mystery spooge you're injecting these days, UH-HUH. Lots of people link to various sources for non-metallic washers with a 9mm outside diameter... but many of these are thin washers so you end up stacking 2-3-4 or more to try and eeke out that last little squirt. Unsatisfying, to say the least, uh-huh.

Ah, but here ya go: I spent lots of money on lots of stupid little bags of plastic debris, so you don't have to. The link above is to a cheap-o bag of M5 spacers, with 9mm diameter and a 5mm height... about the same size as 5 of the usual washers stacked. Long enough to help the plunger bottom out on that 3ml pen vial... but short enough to be placed into the vial end after just a single shot of all but the most wee of doses. UH HUH.... Gonna load the pen, take the first dose, pull it apart, drop the spacer in, reset the plunger... and you're done for the rest of the full vial. The best part? There's TWO HUNNERT FITTY of these little guys in that eight buck baggie, so... uh reckon... 3.2 cents each?

There, I feel like I shared something helpful. Now I don't have to be nice to anyone else for the rest of the day, just gonna sharpen the kaiser blade. Hmmpf.

pen spacer.jpg
 
TL;DR: https://www.amazon.com/dp/B08LCXCN5W? = perfect pen spacers for 3ml vials.
No it is not an affiliate link, and I have no connection/benefit; whoTF is uxcell(tm) anyway?

OKAY... I reckon' this is the tiniest possible little bit of helpful kit to recommend:
Anyone using injection pens is probably familiar with the issues of some of the V1 and other pens, where the plunger doesn't quite reach full depth, wasting as much as 20u or more of whatever mystery spooge you're injecting these days, UH-HUH. Lots of people link to various sources for non-metallic washers with a 9mm outside diameter... but many of these are thin washers so you end up stacking 2-3-4 or more to try and eeke out that last little squirt. Unsatisfying, to say the least, uh-huh.

Ah, but here ya go: I spent lots of money on lots of stupid little bags of plastic debris, so you don't have to. The link above is to a cheap-o bag of M5 spacers, with 9mm diameter and a 5mm height... about the same size as 5 of the usual washers stacked. Long enough to help the plunger bottom out on that 3ml pen vial... but short enough to be placed into the vial end after just a single shot of all but the most wee of doses. UH HUH.... Gonna load the pen, take the first dose, pull it apart, drop the spacer in, reset the plunger... and you're done for the rest of the full vial. The best part? There's TWO HUNNERT FITTY of these little guys in that eight buck baggie, so... uh reckon... 3.2 cents each?

There, I feel like I shared something helpful. Now I don't have to be nice to anyone else for the rest of the day, just gonna sharpen the kaiser blade. Hmmpf.

View attachment 8854
You're my hero!
 
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