@gham
Yes, Spinach has Dolichol and Dolichol upregulates a gene called SRD5A3. It appears that Finasteride downregulates permanently (?) this gene which affects Glycosylation. Please look through the thread (last 5 pages i think) or search for Dolichol in the site.
I believe it is best to supply your body with Spinach 3 times a day, a total of 50 gr per day worked for me. Do this at least for a month.
@Jonson,@gham
Low NO levels may be either from Oxidative Stress which our bodies cannot tolerate or some other mechanism is at stake. If possible please have a person to try the NO Strips. I was able to give it to two people to try, one of them was OK but the second one had depleted levels.
If your levels are depleted, try eating rocket for a couple of days and re-test. Again, i am not suggesting that Low NO Levels are the culprit to our condition anymore, BUT Low NO levels are associated with decreased ability to have an erection and vasoconstriction (among other things).