Safety of multi-day needle reuse for peptide injections

Yes, that's exactly what I'm doing, though your explanation of the risks is off. How would bacteria from my body get into the vials when I wipe the needle with alcohol every single time after injecting one and before drawing the next? There might be tiny traces left inside the syringe, but I push out whatever remains outside my body and wipe again. I've done this for over two years with zero reactions or even slight redness at the site. Good disinfecting habits during the whole process prevent any infection or contamination. As a side note, I keep using one needle for many injections until it dulls, so no need to waste twenty needles a day—one lasts a week or more.

So you're drawing one peptide, injecting it, then using that exact needle to draw a different peptide and repeating that several times?

You didn't make that clear at first. After the needle goes through your skin it carries material from inside your body, including bacteria, even if you push some out. Every time you insert it into a vial you're leaving some behind, and then it goes back into your body. The bacteria can eventually ruin the vials, and if you haven't seen any infection yet you've just been lucky. This approach is very dangerous.

Yes, that's right. I used to do it with ten or fifteen different peptides daily, but now only a couple since most gave me no benefit. I tried around twenty-five to thirty and only noticed gains from four or five at most. These days it's just GLP1s, HCG, and HGH, with maybe one or two others occasionally. I use that single needle for all of them and keep it for at least a couple weeks, sometimes longer. It's not about saving money for me; using ten syringes when one works fine just seems pointless, and people act like I'm sharing it with an alien when it's only going in and out of my own body.

How could that even happen? While you're pushing the peptide into your body, bacteria aren't strong enough to swim against the flow. Plus it's my body, so any bacteria present are ones I'm already used to. The only thing I insist on is disinfecting the needle every time it enters or leaves my body or any vial. I've been doing this for years with no sign of trouble at all.

It's fine to take that risk yourself if you want. It still carries risk though. Just because nothing bad has happened yet doesn't mean it never will. I take risks too, but I don't tell others it's perfectly safe when it isn't. You probably expected some disagreement anyway.

People see things differently, but for me it's just common sense. I could do this for a hundred years and nothing would happen. I'm not in some lab, just my house where I wipe surfaces with alcohol often. What I don't get is why pinning myself in one spot, pulling the needle out, and pinning half an inch away ten seconds later would suddenly be dangerous. It was already inside my body and is going back in. I still wipe it every time it goes in or out of my body or different vials. I'm not recommending this to anyone, just describing what I do. The real danger would be sharing a needle with someone else, no matter how close they are.

For me the issue is putting that needle, after it's been in your body, back into a vial that could then grow bacteria while it sits in the fridge until the next use, and repeating that over and over.

That's absolutely vile, but you do you I guess?

That was the part I worried about at first too, but after doing it with no problems my concern faded. I agree it's probably not advisable or even smart, but I just wasn't worried enough to stop. Most likely I'll switch to one needle per day for however many injections or peptides I do that day.

We have to think about the people reading the forum and what we tell them is safe or not. For your own research you can do whatever you like.

Do you mind sharing what the other two you found useful were? I'm curious.

The well-known ones like BPC, TB-500, Thymosin, Selank, and Epithalon did nothing for me. The ones that gave some effect were PT141 for sexual stimulation, which works differently from Viagra or Cialis but seemed at least as effective, and Melanotan-2 for tanning, though the color isn't as natural-looking. Semax gave a mild mood lift. Overall I was disappointed with peptides despite high hopes. GLP1s are great, HGH is good, and I just started HCG a couple weeks ago so I'm not sure yet.

I engage in various activities that I prefer not to mention in this space. The reason is I don't want to bear responsibility if anyone assumes these actions are without danger, even though I recognize the hazards involved and decide to proceed regardless. For instance, something mild would be continuing with my bacteriostatic water right up to the last drop. I wouldn't mention reusing a single needle across several days, regardless of whether I felt okay about it personally. Similarly, I avoid any reference to puncturing myself using a needle that has entered different containers. That's precisely why I opt for pen devices – because I have a low tolerance for blunted tips, and certain closures on bottles can be quite dense.

This is 100% vile, I agree. Who thinks that's okay? Oh, this guy does apparently. Throw out the needle!

Yeah it's not even worth engaging with.

I hate this for you. You're worth a new syringe or pen needle for every injection. If you keep doing this I hope you stay lucky and never get sick, and that you eventually treat yourself the way you'd treat someone you loved very much if you were injecting them instead.

I know others have already commented, but I want to explain exactly what happens and why alcohol wipes won't help much. Even wiped with alcohol, reusing insulin needles is unsafe medically. Alcohol cuts surface microbes but doesn't sterilize; bacteria from deeper skin layers, follicles, or air can still get in. Once the needle pierces skin it carries tiny tissue and bacteria into the syringe and any vial it enters. The sterile coating is gone after one use and the tip develops microscopic burrs that hold material resistant to cleaning. These can cause bacterial growth in vials or tissue, leading to abscesses, cellulitis, or worse. Medical guidelines are clear: insulin needles are single-use only. They're cheap. Skipping sterile practice will catch up eventually. It's a bad example for readers.

I'm just describing what I do and not suggesting anyone else copy it. There are plenty of things medical research calls dangerous that turn out fine in practice, like using meds past their expiration date. I self-medicate and keep over thirty common meds at home, half of which are expired and I use them regularly, some daily. I've never been sick as an adult and haven't seen a doctor since I was fourteen; I'm fifty-nine now. For example I finished metformin that expired in 2017 just a couple months ago. I'm not worried about this because if nothing has gone wrong in over two years of doing peptides, why would it suddenly happen now? The thing that concerns me more is whether the vials might be somewhat compromised.

It has nothing to do with money; syringes are cheap and I'm fine financially, but I'm set in my ways. If something doesn't make sense to me I go against it, and that applies to everything, not just meds and syringes. I wouldn't care if half the world died from reusing syringes, I'd still do it. It's one of those things where no amount of papers or studies will convince me it's dangerous to reuse the same needle on my own body. This is interesting the way you put it. I would never allow or suggest this for my daughter even if syringes cost fifty times more, so maybe you have a point. At the same time I'm not suggesting anyone reading this should do it. I'm only saying what works for me, and if others try the same and it works for them that's fine. Bottom line, whatever you do that works is what you should stick with.

Using outdated pharmaceuticals differs sharply from the other habits mentioned here, and the level of hazard sits in an entirely separate category. In tablet or capsule form the main downside tends to be weaker results rather than anything worse. Those who respond strongly aren't motivated by dislike; they simply want to highlight how serious the potential problems can become. The approach being discussed leads to situations nobody should experience. While the chance of developing resistant organisms stays small, that offers little comfort once it occurs. The whole process just comes across as reckless, plain and simple. Your comparison of several hundred days with a single reference substance doesn't carry much weight, similar to claiming a year of driving without crashes removes any need for basic safety measures. If cost isn't the reason, then what drives the choice? It feels like an attempt to demonstrate toughness, yet the benefit remains unclear when safer routines exist and are straightforward to apply. Taking unnecessary chances like this won't produce useful knowledge if something goes wrong; others will just see it as predictable and move on. Past generations already showed why certain methods should be avoided. The real concern is that such behavior can result in harm, leaving family members to deal with the aftermath and prompting calls for restrictions that affect everyone. Plenty of other causes deserve that kind of commitment more than shortcuts with injection supplies. If the goal is to experiment anyway, at least avoid sharing the details where others might misread them as reasonable.

Exact same. I use the BAC until it's empty but I would never even consider reusing an insulin needle.

What that user is doing is vile and dangerous. If this forum cares about harm reduction it shouldn't let his story of reusing needles keep spreading here.

Well, that says it all. Even when shown proof of the danger you'd still do it. Heroin addicts think it's fine to just wipe a needle and reuse it for days or weeks too. At least they're drawing from a fresh spoon, not injecting their own body material into vials that can culture bacteria in the fridge.

Interesting. You guys have convinced me to use only one needle per day. As for not reusing the same needle multiple times in one sitting or day, I can't accept that and I'll keep doing it my way. It has nothing to do with cost and everything to do with how stupid it seems to think a needle I just used on myself would be dangerous to use again on myself thirty seconds later after wiping it with alcohol a few more times. I hope you don't see this as arguing for the sake of it; I'm just one of those people who won't do something just because others or even science says so. I won't change my mind no matter what. That's just how I am. I'm not telling anyone to follow my practice or claiming it's the best. I'm simply 100% convinced my method is 100% risk-free for me. Others should do whatever makes them comfortable.

This isn't about feelings or comfort. You're playing Russian Roulette, and the bullets are invisible dangers that are just as deadly, only far more painful and expensive before the end. Assigning a number like 100% risk-free doesn't make it true; the statement is completely false. It's not a question of if it will happen if you continue, but when. No matter how loudly you insist otherwise. There's nothing admirable about this stance. Being loud and wrong doesn't make it less wrong. Not understanding how your own cells behave once they're no longer living doesn't matter if you just follow accepted protocols from people who do understand. Those scientists know how antibiotic-resistant bacteria actually grow. Based on what you've chosen, you clearly don't. You've been lulled into false security over something that may not be as simple as it seems.

I have zero experience with heroin or any addictions. I'm strong-willed and have no problem quitting something I know is dangerous. I used to smoke decades ago and stopped cold turkey over thirty years ago once I researched and accepted how harmful it was. The way I see it, what counts as proof to one person can mean nothing to another. We're all different and respond differently to actions or medications. For example, many people see running a marathon as a great achievement, but I swear I'd turn down a million dollars to do one, not because I think it's dangerous but because it seems stupid and plays into herd mentality that I can't accept. To make it worse, I view non-professional marathon runners as being caught up in that same mentality.

Haha that makes me want to pile on the criticism. Situations like this explain my choice against blending in or copying what the group does. Staying completely against your opinions feels fine to me. Enough said on the matter.

You're treating this like some pointless argument over preferences instead of established medical reality backed by evidence going back ages. Proper handling of injection equipment has been a basic rule from the start of such practices. It's not just random online opinions from people you dismiss. Picking this spot to stand firm could end badly or worse. Comments like the ones you made in bold could put readers at risk if they take them as reliable guidance. Pushing this kind of thing on a board focused on unregulated research compounds shows real poor judgment. Anyone coming across your comments should simply skip them entirely. You've shown your views come from unsafe assumptions that shouldn't influence anyone. I can't grasp brushing off real daily hazards just because no clear gain seems obvious right now. Some here have tried pointing out those hazards exist and matter. Once you grasp them yet still pick the risky path anyway at least the choice would be based on full awareness. Claiming everything seems fine after a short period with no personal encounters doesn't prove anything safe. That view would be funny if the stakes weren't so high. My reason for speaking up has shifted from trying to reach you since you're missing the point entirely to stopping others from getting hurt by what you don't see. I hope things go okay for you but it seems empty when you keep choosing activities known to carry serious downsides with nothing positive attached. It's like deciding to spin the cylinder anyway.

I value hearing what others have lived through more than their thoughts on matters. Even so, I struggle to simply adopt anyone's perspective, no matter if it comes from researchers or trained physicians. I need to reach my own sense of ease after weighing the details, though I do take in what they share. For example, two people I knew passed away after medical professionals either got their condition wrong or caught it too late. Information I've seen points to many annual fatalities tied to such mistakes by those in medicine. I doubt I would ever fall into that category myself. There were moments when I urged people close to me to ignore a physician's call and it proved correct. With one relative the first assessment would have created extra troubles on top of the existing one. After digging into reports and talking with a few others, I suggested trying another professional with an alternate view of the issue, which matched what was actually happening and brought full recovery after a short time. Findings in research can also get overturned by later work, leaving me unsure what to trust. So I look into things as best I can and settle on my own view, which has fit my needs well up to now. Others should keep following what suits them, and I will do the same without shifting. This topic is done for me.

Classic oppositional defiance disorder and maybe something else I haven't pinned down yet, possibly borderline. Note to the forum: you're talking to a brick wall that loves taunting you to keep you beating your head against it. It's for attention. Just watch.

If you're trying to show natural selection through reckless health choices, that's up to you. But don't share it online like it's a fresh medical breakthrough no one else considered. You've clearly absorbed too many medical dramas from television. Your whole approach amounts to sheer foolishness wrapped in claims of courage or determination, neither of which counts as a strength here, and it brings no gain at all per what you described. No solid explanation has been offered for ignoring standard cleanliness steps around injections. The only possible factor might involve expense, yet you already noted that isn't relevant. So nothing justifies taking on avoidable hazards. Do you mix your compounds using plain water or spend more on the preserved variety?

Thanks for the invitation, not biting though. Love the personal attack, keep them coming.

I figured that out already. With some spare time on my hands I decided to stress how unreliable this information really is in every possible way. Probably no one will take it seriously anyway... it's among the worst suggestions I've encountered online and I've visited discussion boards for decades now. There have been plenty of terrible suggestions. 😆

Hahaaa that really made me laugh. Seriously dude, Darwinism? I'll only bring it up once since this isn't the right place for it, but Darwinism is the biggest scam ever pulled by humans. It used to be the biggest until climate change took over as the top one. Everything I've said here points away from Darwinism, yet you managed to connect the dots in such an exemplary way. LOL

To clarify my earlier remark about never doing something, that applied only after reaching adulthood rather than my whole existence. I also pointed out having avoided physicians entirely once grown. You overlooked how I mentioned possessing more than thirty different compounds, some well known and others obscure, and using several of them along with additional items strictly to ward off illness instead of treating any existing issue. Plenty of others handle their own regimens the same way and stay quite healthy. No physician would ever authorize the items I use, so debating it serves no purpose. One recent case stands out: my sibling dealt with intense discomfort in her lower leg. I mentioned trying a low dose of a certain compound to her physician, who reacted with shock and refused outright. Two different prescriptions followed, yet neither helped at all. I visited and provided a single dose one night, after which the discomfort dropped by about ninety percent by morning. That compound carries no approval for handling pain of any sort. Responses here often treat basic facts repeated from public sources as deep insight. Conventional approaches hold little appeal for me even though some standard compounds get used for extending lifespan and avoiding disease. No need exists to keep replying when the mindset stays rigid and uniform. My choices center on whatever delivers results after thorough checking, even if it strikes others as odd. Self handling works solely to stay ahead of problems. When an actual issue arises the proper step remains seeing a physician rather than experimenting alone. Still, learning details about any diagnosis makes sense, including getting another view. Knowing someone who thinks differently can help because the overall perspective on handling matters counts more than anything. Most just follow along without question. That approach never bothered me much, though a bit more personal effort on education would change things for the better instead of handing decisions over completely. Everyone can proceed as they prefer and focus on fitting in. None of it affects me.

Yeah that checks out since I'd switch to another physician immediately if they tried it. At last we share an opinion on something. It shows folks can reach agreement even when differences look impossible to bridge. Anyway I'm finished with this whole discussion. Good luck joining that optional risky activity where your health might suffer badly or worse though the supposed payoff isn't worth much sarcasm intended. Engaging in foolish activities leads to foolish outcomes.

Once anyone begins using definite terms without exceptions I leave the talk right away and any logic practicality or evidence driven arguments go with me. The things you said earlier in our exchange actually question or prove that those definite claims aren't accurate. Apologies but I'm done here.

Appreciate the update. Had no clue this sort of thing existed until now.

Absolutely, it keeps me from losing my mind whenever others seem determined to provoke reactions. I went over those repetitive debates and lost time I will never recover. Eventually I discovered the mute feature really helps. By the way I combine every one of my compounds together inside a grimy mixer with liquid from my pet's dish. I ignore warnings from phony research claiming risks. Nothing will force me to quit.

No one seems impressed by this and the moment has clearly passed already. I would rather see actual experiences shared going forward, even when that bothers certain overly sensitive types.

It looks like you appreciate the finer things.

Maybe everything worked out fine in your case. The key issue though is that this kind of thing can be dangerous. Folks come here looking to pick up ways to try similar stuff themselves. Someone might figure they can handle it the same way and end up badly ill without making it through to talk about it later. Treating the whole thing like it's harmless and ordinary just isn't right. We need to speak up about the risks so others avoid getting harmed.