Wow, a potential analgesic that actually has a POSITIVE effect on libido....that would be incredible.
Central analgesia (for me anyway) seems to go hand in hand with a certain degree of chemical castration. An effective analgesic which not only doesn't blunt the libido, but actually boosts it would be a welcome addition in my book.
Unfortunately my guess is that if Ambrein really does have analgesic properties, they will prove to be quite minimal, and not suitable for use as an analgesic.
There seems to be a million things out there which show some analgesic activity which may even be reversed by naloxone, but at the end of the day, they are either impractical, problematic, or just so vastly inferior to existing analgesics that they are never developed.-DG