I almost always have problems with the duration of my erections. They tend to last more than 4 hours no matter what chemical I inject, nor the amount, as low as 8 units.
Less time erect with Bimix, more time erect with Trimix, both create
priapism for me. I've been to the ER twice to have my penis aspirated until I figured out how to
end my erections.
An aside:I've stopped using Bimix. It contains too much
Papaverine,
the primary, chemical scarring agent in both Bimix and Trimix. Based upon my research,
prostaglandin, the additional ingredient in Trimix,
has little to no chemical scarring effect:
https://www.franktalk.org/phpBB3/viewtopic.php?f=5&t=13722&p=119724#p119724 It does, however, cause discomfort to pain for most men, me included.
I need less Trimix than Bimix to achieve the same quality of erection. Injecting Trimix means less scarring due to
Papaverine, since Trimix has less of it for the same amount of chemical injected:
https://www.franktalk.org/phpBB3/viewtopic.php?f=5&t=13722&p=119724#p119724Now, I'll refocus on your problem with priapism.
Generally, physicians tell us that any erection over 4 hours is a dangerous problem. But an ER doctor told me that 4 hours is not a hard number. The amount of time a man has an erection before the penis is damaged varies from man to man, from event to event, depending on many variables.
However, at about 4 hours, the danger begins. The danger is that you will kill nerve cells in the penis because of oxygen deprivation: "
Ischemic priapism can cause significant complications. Due to the lack of oxygen, there can be significant damage if priapism lasts for more than four hours. The complications include erectile dysfunction as well as disfigurement of the penis."
https://www.medicinenet.com/priapism_penis_disorder/article.htm#can_priapism_be_preventedThe penis can tolerate a little-to-no-oxygen condition longer than any other organ in the body (that I know of). It's designed for this but it has limits. Once nerves are damaged/killed, they can grow back (if the damage to them is not too severe) but it is at a snail's pace, "...2 mm/day in small nerves and 5 mm/day in large nerves":
http://nerve.wustl.edu/NerveInjury.pdf and
https://en.wikipedia.org/wiki/Neuroregeneration (Human penises were never designed to be used the way we are using them. It's borderline abuse, at best, but I don't care. My wife and I have an incredible love life, experiencing dimensions of love, lust, and ecstasy that we never knew were possible. At my age, 71, I'm not giving anything up to save my penis. I only want to ensure that my penis lives longer than I do. I truly wish every man, every couple could experience what I/we do.)
I can tell you unequivocally, no matter what any doctor says, that icing an erect penis will only keep it erect. It constricts both veins and arteries. I read this incorrect advice everywhere, I hear it from doctors. I don't believe it. It has never worked for me, only made matters worse. "Ice works for healing because it constricts the blood vessels that carry these harmful chemicals (the cytokines) to the injury, which in turn slows down the inflammatory process."
https://gearpatrol.com/2015/08/13/how-ice-affects-muscle-recovery/An erect penis is not an injury.
Icing is for injuries, to arrest the flow of blood and cytokines toward the site of an injury.
What we need to end an erection is
heat to dilate blood vessels in the base of the penis, and allow the Bimix/Trimix that is trapped inside it, to dissipate out of the penis. I have developed a process that does this. I've done it over 100 times in the last year with 100% success.
It is not without risks which I have documented. But if you have a healthy heart and pay close attention to your response to sustained heat, you will be successful using my technique:
https://www.franktalk.org/phpBB3/viewtopic.php?f=5&t=13693.
I would appreciate it if you try my method, that you send me a private message telling me about your experience.