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L-Carnitine pain

danhrph

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SB Labs
I recently got some 600mg/ml l-Carnitine from kits for less. I tried injecting 1ml and the pain was debilitating. Felt like I hit a nerve but I’m positive I didn’t. I tried 4 different injections sites over a week. If I dilute to 300mg/ml with BAC and allow it to sit overnight to get to room temp it’s moderate better but still insane.

My question is: A) is this just the way it is or B) is this not L-Carnitine? It’s quite viscous.
 
I recently got some 600mg/ml l-Carnitine from kits for less. I tried injecting 1ml and the pain was debilitating. Felt like I hit a nerve but I’m positive I didn’t. I tried 4 different injections sites over a week. If I dilute to 300mg/ml with BAC and allow it to sit overnight to get to room temp it’s moderate better but still insane.

My question is: A) is this just the way it is or B) is this not L-Carnitine? It’s quite viscous.
Ive never had Lcarn that didnt hurt. But the pain youve described is worse than i have experienced. Usually its painful to inject and some slight discomfort for a few minutes, an hour at most. Mine is prescription at 500mg/ml. What you have is most likely what it says it is. K4L is a trusted source IMO. Its possible youre just sensitive to the compound. Buy some sterile 10ml viles off Amazon and dilute it further see if that helps.
 
I use to make my own L-C, 500 mg per ml . Used BAC and what I found best for pip was to inject really slow, I mean like 30 sec. And then massage the area for at least the same, longer would be better. Some injection sites were better than others, for me the delts were best.
 
When are you taking it and what are you doing after?

I shoot it pre cardio into glutes and it definitely stings a good amount momentarily but then 30seconds into cardio it's always gone.
 
When are you taking it and what are you doing after?

I shoot it pre cardio into glutes and it definitely stings a good amount momentarily but then 30seconds into cardio it's always gone.
I do it about an hour before workout. Don’t get me wrong, PIP is an issue for sure. But I’m saying the actual injection is miserable. I go very slow. I’ve given people thousand of IM injections over the last 16 years. I’m a pharmacist.
 
I do it about an hour before workout. Don’t get me wrong, PIP is an issue for sure. But I’m saying the actual injection is miserable. I go very slow. I’ve given people thousand of IM injections over the last 16 years. I’m a pharmacist.
yeah something is wrong with that carnitine then

600mg/ml should be basically painless.
should be less discomfort than 1ml of test
 
Of course i bought 4 bottles 😂. I’ll say the 50mg sildenafil is absolutely not what it says.
 
Of course i bought 4 bottles 😂. I’ll say the 50mg sildenafil is absolutely not what it says.
Contact the rep from K4L man. Tell em your issue and you're not satisfied and the product is useless to you. @TomJ is right if its that painful, debilitating as you say, then something is definitely not right. My prescription stings a little in my quad but its not painful enough to be an issue, and goes away quickly after exercise. I always take mine pwo.
 
I use 600mg/ml concentration but mine comes with 2% (lidocaine 0.1%). No pain taking 1 ml IM.
 
SB Labs
There’s nothing wrong with. I hate it. It’s by far the worst pain out of any injection. It’s miserable. I get pip from everything everytime unless in the Delt even then there still minor pip. Glutathione & L Carn suck the worst. I do dilute them both a little & seems to make it tolerable
 
I was doing 1 ml 500 mg ed , pip was minimal, certainly nothing close to debilitating, I’d do what @Hablooblah suggested.
 
I make several liters of L carninte every month.

600mg/ml should be completely painless to anyone used to taking gear
Got a recipe you follow or a link? I've seen the ones here too. I've been using 600ml a day for a minute, but my source is empty with literally everything else I'd want and don't really feel like paying $75 for shipping for a kit of a $65 project
 
Got a recipe you follow or a link? I've seen the ones here too. I've been using 600ml a day for a minute, but my source is empty with literally everything else I'd want and don't really feel like paying $75 for shipping for a kit of a $65 project
I'll do a quick write up for simple syringe filtering. easy for personal use batches.


you can make do with bulk supplements l carnitine.
get sterile WFI from biologix.
get benzyl alcohol from med lab supply

get from Amazon:
-cheap magnetic stirer/hotplate
-some beakers for whatever size batches you want to make (I wouldn't make less than like 100ml)
-ks tek sterile 30ml vials
-vial decapper
-33mm PES sterile syringe filters
-50-60ml syringes
-caulk gun
-4-6" IV extension tubes



for a 100ml batch of 600mg/ml

mix 60g of carnitine in a 100ml beaker with 40ml of WFI.

let it spin on the stirer (won't need much heat if any)

add 1.5ml benzyl alcohol

once it's dissolved and mostly clear, top off to 100ml with more WFI and let that mix for a few minutes.
20250630_135703.jpg


to prep vials:

remove cap, and use decapper to remove crimp without removing stopper (only if you want to recap yourself, otherwise you can just remove cap.

insert 21-22g needle into stopper (for filling) and another needle (can be smaller gauge for venting) on the opposite side.

attach filter to fill needle, followed by IV extension (optional but makes it easier)



to fill vials:

draw up 30-33ml into your 50-60ml syringe followed by 10ml of air.

attach your syringe to the open end of your IV extension or open end of syringe filter if not using an extension.

inject through the line and filter into the vial.
a caulk gun helps.

once filled remove needles and crimp new cap if recapping.
20250630_135717.jpg20250630_135824.jpg20250630_135902.jpg20250630_140147.jpg
 
I've tried L-Carn from 3 different vendors and ALWAYS have some (wouldn't call it like "pain" per se but deff an uncomfortable feeling. Not like "burning" maybe more like overused muscle? but if I take a full ML I WILL get like a LEGIT uncomfortable feeling in my delt. I take it 30 mins preworkout so by the time I get to the gym it's usually fully gone and I'm good to go. Now I divide the dose and do both delts or just do half a ML split into both delts.
 
I've tried L-Carn from 3 different vendors and ALWAYS have some (wouldn't call it like "pain" per se but deff an uncomfortable feeling. Not like "burning" maybe more like overused muscle? but if I take a full ML I WILL get like a LEGIT uncomfortable feeling in my delt. I take it 30 mins preworkout so by the time I get to the gym it's usually fully gone and I'm good to go. Now I divide the dose and do both delts or just do half a ML split into both delts.
500mg/ml ph 6.8-7.0 is absolutely painless.
No burn, no pip. Super smooth.
 

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