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Injection Pens & Devices

Pen reviews, tutorials, and troubleshooting

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40 Topics 330 Posts
March 2026 Contest
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  • Defective Gansulin Pen?

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    RandyR
    What size needle? What compound? is the stopper in the cartridge crooked? have you tried it with the cartridge warm? This is likely one of those and not a broken gansulin. even ive had this happen a few times.
  • V4 vs Xulin 3

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    I
    @Randy No problem thanks for the update! Looking forward to it
  • Gansulin Pen Back in Stock Date?

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    M
    @randy Any estimates of when the shop might be back in stock with the Gansulin pens?
  • Reusable Travel Research Pen + Case

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    RandyR
    Unfortunately those arent being restocked
  • First time using Gansulin Pen

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    R
    With regular pens, you have to press the plunger manually to dispense the product. Auto-injectors are spring-loaded, so you press and hold the button and the pen smoothly dispenses the product. I think they are both accurate. The problem that you describe is, imo, a separate problem. You are trying to dispense an amount that is barely greater than the margin for error. If you are injecting 3 units, and you lose .5-1 unit to inaccuracy in measurement or something else, and then you lose a little more due to dripping or failure to inject completely, you could lose a substantial amount of the product. If I inject 200mcg in 3 units and lose 1 unit, I am losing 66.6 mcg of the stuff. If I am injecting 200 mcg in 10 units and lose 1 unit, I am only losing 20 mcg. It might make sense to dilute you peptide to make it easier to get accurate and consistent measures.
  • Shipping time

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    J
    How long after ordering pens, are they shipped out?
  • First time researching pens - some questions

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    T
    @Randy Thanks for the response. Higher dilution is a great idea. I'll definitely dilute the next batch as the current research amount is 10 units. I do count to 10 after pushing already, so I'm good there. I think I knew the answer on sterilization....don't even know why I asked...
  • OUT OF STOCK: Xulin Pen 3 + Case.. When is the restock?

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    S
    @ussliberty Got mine today- should have ordered at least another one- very nice!
  • EU Cartridge Supplier questions

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    C
    Hi all, just joined the forum and I must say it’s an incredible resource. However I am at the stage where I am looking around for pen supplies and pre sterilized pen cartridges, however I am having a hard time finding any which are located within the EU, does anyone here perhaps have any suggestions for a good supplier? Thank you all in advance.
  • Cartridge Question

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    J
    Thank you!
  • Pen Tips / Needles

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    I
    Thank you! I bought some for the pens I purchased from here, hopefully they are close to the actual NovaFine needles
  • Gansulin Auto Injector and Testosterone

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    P
    Anyone using the Gansulin with 12mm 29g needles and Testosterone Cypionate? I use a manual pen, it is a slow steady injection with warmed Testosterone Cypionate. Wondering if it can handle the slightly more pressure with oil based injections. Thanks for any info. -Phil
  • Pros and Cons of using injector pens

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    RandyR
    @diegoc What Diego said. Buy some v2s and and try it.
  • cartridge handling help

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    D
    Having a few pens is a good idea for those peptides you do constantly, you can have 1 pen that you swap vials but its a pain in the ass. Ive injected myself so many times with out priming the pen, lol
  • Peptides that work with nasal sprays

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    MyBM
    Technically anything with a Dalton weight under 500 will work. Glutathione works because its 307.32 daltons
  • V3.5 Pen

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    D
    @Randy thanks. Nice to finally e-meet you. You’re all over my YouTube feed.
  • V3.5 vs V4?

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    ?
    I see that the v4 are sold out. Is there difference with these 2 versions?
  • V2 Not Injection? (probably user error)

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    J
    This morning I let it sit out as I sipped my coffee and then I changed the needle. It worked! Thank you. The needle is so much better than the disposable insulin ones, I couldn't feel it! I was a bit worried to push the button, that it might just be on the outside of my skin! LOL
  • Pen cartridges issue

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    RandyR
    what was your order number. Chances are you got UV sterilized as we had a thousand of those come in at one point.
  • V4/V2 Pen Needles

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    RandyR
    https://amzn.to/4b7OA6W