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JetInject

6 replies6 peopleAug 2, 2026☆ Follow
Summary

Is a consumer needleless jet injector like JetInject practical or worthwhile compared to regular shots?

Forum users recall old military jet injectors as fast but painful and prone to cross-contamination issues like blood spray. Modern single-use cartridge versions are viewed as more hassle than help for frequent users because each injection requires proprietary parts. Most participants say they prefer standard needles or pens over the jet method after their experiences.

What this discussion establishesWhere people disagree

Whether the new commercial models are an improvement over the old military versions or simply more inconvenient

Still open

Actual cost and durability of the consumables or how the device feels in real use

Nothing here is advice.

6 replies · 6 people
SlowAnchor55archiveopening postAug 2

Has anyone used JetInject? It's being advertised as a needleless injector that works with a pressure stream. Doctors have access to higher-end versions of this kind of equipment, but the advertised model still seems costly.

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ClearLantern70archiveAug 2

I checked it out briefly and it looks interesting. Not against buying something like this once, but I wonder about the cost of the supplies that get used up, how long they last, and what the injection feels like. I would not be the first to try it, but maybe the second if a good review appears.

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ClearLantern70archiveAug 2
↳ replying to @ClearLantern70

Looking more carefully, it seems each injection needs its own syringe and adapter. The promotional video leaves out quite a bit of information.

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NorthWillow72archiveAug 2
↳ replying to @SlowAnchor55 (opening post)

We lined up for similar devices in basic training. It was quite an experience; the person ahead of me flexed and blood ran down his arm. They probably have improved models now, but that was over forty years ago. It was interesting because you could inject one person after another without swapping needles, all from a large container. They gave multiple shots while walking down the line, plus the smallpox one at the end. I am not sure I would trust a version that costs two hundred dollars though.

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QuietThistle70archiveAug 2
↳ replying to @NorthWillow72

I had the same basic training experience with those devices. It was not especially comfortable. I would rather get a shot from a regular sharp needle than from the jet machine. The reason they used them was to move an entire platoon quickly, and they were somewhat sadistic about it as well.

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AmberCinder46archiveAug 3
↳ replying to @NorthWillow72

Those guns were phased out long ago because of cross-contamination risks where I live. The newer commercial versions look like a lot of extra work for a single injection since you have to load a disposable cart or chamber each time. The supplies are made only for that brand, so they will be expensive for anyone doing twenty or more shots a week. An updated smaller version that could use one vial until empty would be nice, but buying five or more units probably would not be. For now I will keep using pens and syringes.

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GreyPebble99archiveAug 3
↳ replying to @NorthWillow72

Same here. I know exactly how cattle feel after going through that. I much prefer my small needle instead. It hurt badly if I remember right, and the penicillin shot in the buttocks was the worst part.

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