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I’m new to injections. I started with a 5/16 inch needle 31 gauge and Trimix 5 and it wasn’t working! So my doctor prescribed trimix 9, it still wasn’t working! He got me new needles 1/2 inch 30 gauge! So I’m thinking maybe the 5/16 inch needles weren’t going in far enough? But now being 1/2 inch do I change how much of a dose I might need? I don’t want to put to much in and have to go to the ER, for an erection problem!

Hey Jaxson,

The needle size has nothing to do with the dosage, that doesn't change. The needle size is only the delivery method, you will have to experiment with what is best for you.

The length of needle determines the depth of the injection material, the gauge is the diameter of the needle. The needle should be inserted all the way each time, so you have a consistent depth of the injection material. The length of the needle often determines the diameter of the needle, if the diameter is too small for the length the needle can bend or break.

Injections work really well and can be a great remedy for ED, until they stop working.

Best of luck.

Yes, the needle does not change anything. A longer or smaller diameter needle may make it easier to inject, but it's how much Trimix used that matters. Keep a package of Sudafed handy, take 5-6 all at once if you get an erection that won't go down. I'm guessing the 5 and 9 number is the units doc has you using. You need to slowly increase that number until you get a satisfactory erection. That will be your number as long as it keeps working. If you have to use 30 units or more it's time to ask doc for a stronger formula.

Jaxson wrote:I’m new to injections. I started with a 5/16 inch needle 31 gauge and Trimix 5 and it wasn’t working! So my doctor prescribed trimix 9, it still wasn’t working! He got me new needles 1/2 inch 30 gauge! So I’m thinking maybe the 5/16 inch needles weren’t going in far enough? But now being 1/2 inch do I change how much of a dose I might need? I don’t want to put to much in and have to go to the ER, for an erection problem!

5/16" needles may not be long enough for some people. I use 5/16" but I do depress my flesh with the nub of the syringe a bit so I'm actually going a bit deeper than a 5/16" needle naturally would. But use the needle length that works best for you.

The needle length shouldn't have any effect on dose UNLESS the needle length is causing you to fail to get the full dose into the cavernosa. In that case the effects of the dose could very well be effected. Usually there is some discomfort or even pain if much of the dose is injected short of the target. However it would probably be wise to start at a lower dose with the new mix when changing the needle length if you think you may not have been getting the full dose to the target tissues. However. having two variables at once does make it harder to figure things out. But with you just starting out it's all a pretty blank slate.

The doctor changing the trimix prescription from trimix 5 to trimix 9 doesn't mean anything to those of us not using the same doctor or pharmacy. The defining of the mixes with numbers is arbitrary and specific to the doctor and/or pharmacy. What are the actual mixes? It should say on the vials. It would be helpful to know both the mix ingredients by mcg and mg per one ml and your dose by volume by ml or units.

I determine needle placement by plunger resistance. If it is difficult to depress the needle then you're not at the correct depth. It should be little if any more difficult to depress the needle when, in the correct spot, than if just squirting it into the air or back into the vial.

Good luck.


Edited: To fix a couple of typos.

AmansinCali wrote:Hey Jaxson,

The needle size has nothing to do with the dosage, that doesn't change. The needle size is only the delivery method, you will have to experiment with what is best for you.

The length of needle determines the depth of the injection material, the gauge is the diameter of the needle. The needle should be inserted all the way each time, so you have a consistent depth of the injection material. The length of the needle often determines the diameter of the needle, if the diameter is too small for the length the needle can bend or break.

Injections work really well and can be a great remedy for ED, until they stop working.

Best of luck.

Injections really dont stop working. There's many people that use then for twenty to thirty years or more. Peoples ED symptoms may worsen and they never try to fix the route of the cause.

I'll just add to bldolnk's good comments and say that you're in the cavernosum if there's no pain when you depress the plunger.

Research the "Injections" topic for technique; there is a lot of good needle placement advice going back years.