Noob question but gotta ask, same needle multiple pins?

One peptide per syringe and pin, then straight into the sharps container.

Needles are cheap and usually come in packs of 100.

I've kept up this daily habit without any serious problems so far, which gives me a bit of personal proof it seems fine. That said, I'm not pushing anyone else to try it. I always put the used needle straight into my disposal container before nightfall and never let anyone else borrow my gear for these substances 😎

I've been using the same needles over and over for a decade without any problems. I make sure to do it right away though. Everything gets reused within roughly ten minutes. It cuts down on trash and seems fine to me.

If I pull from several containers with one needle each time, the whole set ends up sharing the same exposure. That makes me extra careful since any transfer could trigger nasty health issues such as blood poisoning. In my own routine I grab a fresh clean needle for every container plus the actual shot, even when that adds to the total cost. Looking after my own well-being always comes before cutting corners, especially with lab-grade substances or batches where individual cleanliness checks may have been skipped.

Additionally, this process keeps blunting the needle point over and over. There are occasions when I find even a single passage across the rubber barrier produces unwanted effects. I've come to frequently rely on a luer lock approach, extracting with one unit which I then throw away before using a separate one for delivery. Plus, tips on the proper facing of the slanted edge that I came across in this place or another spot have gotten rid of practically all the pain.

I've noticed how the rubber cap can blunt the tip on certain needles.

I went ahead and created a custom mix from those items to reach an identical effect. Mine covers the KLOW stack but leaves out GHK-CU. Numerous blending tools can be found online. Since they were already reconstituted I transferred the whole set into one bigger vial that had room for the total amount.

With each injection the point seems to lose its edge a bit more. People can pick their own route but to me this counts as a strange kind of self-inflicted torment. Backing the wrong politicians works the same way and just piles on avoidable discomfort.

There's this well-known discussion about the subject that people find intriguing to look through. Still, it's best left alone and not brought back up again because it turned into one that just wouldn't die. The person who started it kept refusing every suggestion on how to do things without risking infection. Site staff had to get involved sometimes. He acted like a provocateur until they removed his access. You don't even get to read his final rude comment. Always consider safety with needles and verify information from multiple places. I also think it's unwise, and I'm not sure why anyone would combine those substances. Injecting under the skin doesn't hurt at all, no matter how often you do it. I typically rely on a single one. Better to let that old discussion stay buried.

I combine several peptides in a single injection device because one possible sting seems preferable to repeating the process multiple times. Still, I figured out never to combine a GLP-1 agonist with anything else, so that substance always gets a separate device. From doing it that way I noticed even a lone draw from the vial can produce noticeable discomfort. Across months of daily injections I've only failed to notice the needle going in on maybe two occasions. I stick with 29 or 31 gauge needles. For some reason stabbing quickly after pinching the skin feels worse than easing it in gradually, even when the tip has dulled enough to meet resistance.

If the plan is just drawing different peptides from their own containers into one syringe after swabbing the tops, all for a single shot, that's no big deal in my experience. What would be bad is inserting a needle that's already gone into your body back into a container. I've done exactly that. A few peptides might not mix nicely, and details on that can be found in some chart, yet the ones in question work fine together. The needle does lose some sharpness from multiple insertions through the seals, though these are so thin it still feels okay. It means buying fewer needles and making fewer injections overall.

In an ideal situation where everything stays completely clean, which never happens, this has always been frowned upon across all groups I belong to. Putting the same needle back into containers multiple times makes it blunt to the point where I notice the difference right away. At best, there's no benefit whatsoever. At worst, it leads to marks or something more serious. That's just how I see it.

I have no objection to that. The needle does however lose a small amount of sharpness with every insertion.

I always grab a fresh needle for every single injection I do. Around the ankle region that short 31 gauge size seems adequate. The compact length means it resists bending better. For my recovery protocol I've kept up this routine with zero troubles, and I wipe both the rubber stopper and needle using alcohol wipes prior to inserting. Yet performing a subcutaneous shot in that spot near the ankle strikes me as quite difficult.

Three parts from the KLOW set blend fine inside a single container. A stability check confirmed they stay intact in that combination, so I only need one injection.

I mix those three together inside a single container and draw from it each time instead. A refillable injection device loaded with three milliliter inserts works far better for preparing and storing the mixture in one place. One version already combines everything plus an added component. The items get prepared inside clean surroundings. The easiest approach for keeping things clean during handling uses a sealed workspace. Wiping down that space means misting seventy percent rubbing alcohol through a spray bottle. More details turn up with an online search.

Also meant to mention before that I follow the same routine but pull with the wider gauge and switch to the narrower one for the actual shot. I never reuse one needle across both parts of the process. This avoids any worry about the tip getting blunt when going in.

If the two peptides work well together, combining them in the syringe right at injection time isn't going to cause any harm. My bigger worry is getting something unwanted into the containers holding the peptides rather than into my own body. Before sticking the needle into the next container, I always clean it off using some alcohol. When it comes to using one needle for several injections on myself, that's something I do every day, delivering five units across three spots. It's also true that skin doctors often use one needle to make multiple injections on a person while doing wrinkle treatments.

I figure many here have no clue how the older type 1 diabetics used to inject right through grimy outfits like pants or damp shirts and reuse one needle again and again. They used to joke that body fat would clean everything up. Just don't mix up what might happen with what usually does.

I prefer Luer Lock syringes when drawing two separate peptides together with the starting larger needle then switching it out for a smaller unused one to inject with the angled part upward right after for less discomfort. Alternatively when they can be combined I put both into one container since a compatibility chart exists somewhere. From my experience going through several containers with the needle blunts the tip especially finer gauges which seem more delicate resulting in pain burning stinging and sometimes extra site damage.