It’s a lot more stable than you think. Check out this published study on the stability of tri-mix at room temperature.

https://www.ncbi.nlm.nih.gov/m/pubmed/23924676/

It looks like after five days at room temp 8% of the alprostadil was lost.

You need a full blood workup. Testosterone is not the only hormone that can cause issues. Prolactin, estradiol, estrogen, FSH, LH, etc can all play a part in normal sexual function as well as other issues you might be having. If your primary doctor isn't up to checking these, find a good endocrinolo...

I have a question for you Flavio. If you are just by yourself, masturbating, does your psychogenic ED prevent you from having an erection for the whole session?

I realize this is a bit late but have you ever heard of pudendal artery syndrome? With your history of constipation, pelvic floor pain, numbness, etc, it might be something that was overlooked by your doctors.

45 yr old, ED my whole life, probably neurogenic due to a back injury suffered sophomore year of high school, and manual stimulation doesn’t really feel good to me, it’s more or less just a rubbing sensation. Anyway I get morning erections probably about 80% of the time. They are very good, almost p...