Seems like some good articles have already been linked. If a subject is needed for testing I'd volunteer. I'm a healthy, in shape, 26 year old that had an above average sex drive before the anti depressant that gave me PSSD so anything that actually works I'd see the effects of pretty quick.
I think some good articles have already been linked, I think it is also worth mentioning that sexual side-effects are one of the standard side-effects of anti-depressants and anti-psychotics and standardly accepted/ignored, which makes both denial of lasting effects and their existence to be expected, the same as any other "tardive" side-effects.