Penile injections2017-02-20T01:54:49+00:00

Penile injections are an option to help you get an erection if medications and other methods don’t work for you. These prescription injections are safe, easy to administer yourself (after a quick lesson) and will provide an erection lasting at least half an hour. You’ll probably feel a bit of a sting at first (just like a flu shot) but most people don’t find the injection painful. Between five and 15 minutes after the injection, you should have an erection. An actual penile injection is shown in the video below.

What types of injections are available?

Bi and Tri Mix Caverject
Generally pain free An uncommon reaction to the active ingredient can cause pain
Mixture of 2 or 3 medications Only one medication
Obtained from a specialist clinic or urologist Can be purchased at the pharmacy
Erectile dysfunction treatment Evidence-based specialist service
Only use what is needed per injection (slightly cheaper overall if used regularly) Comes with a pre-loaded amount per syringe

How do I load the syringe?

Preparing a Bi and Tri mix injection

Preparing a Caverject injection

Are there side effects?

A rare side effect, known as priapism, is a full erection lasting more than two hours. This is caused by administering too large a dose which is why it’s a good idea to do a test dose at a clinic before using this medication at home. Your dispensing clinic should supply an antidote if an overdose occurs. Pseudoephedrine used in ‘Sudafed’ can also help reduce a priapism. A very small number of men may develop some changes in their penis when using injections for a long time so it is important to check your penis on a regular basis. If you notice any changes, then please see your medical specialist.

Does it interfere with any other medications?

The injections are safe with any medication you are currently on. If in doubt, always discuss this with your medical specialist. Your doctor or specialist can also assess your overall health and offer guidance on whether these injections are suitable for you.


  1. December 8, 2016 at 12:19 am

    Red Flag: Debbie indicated that she says to men that injections should be between 2am – 4am and 8pm – 10pm as the safest territory for injection. A video Debbie found on Youtube indicated 3am and 9pm were the right places. Noon and 6am as the wrong area as per the video indicates. Debbie would like to do some more research here as it is an important issue.

    • December 17, 2016 at 7:21 am

      Debbie followed up to indicate there didn’t seem to be any consistent guidelines. Cyril indicated to follow up with Rob Candlish for thoughts

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