> Gingko Biloba keeps looking like a possible contender.

Regarding the Gingko recommendations, I see there are lots of sites on the Internet recommending it for AMS, even more now than a few years ago. However, there were initial studies showing it had a beneficial effect, but then followups with more people and better controls, that found no effect.

I haven't looked for any recent studies, so if anyone can find them, please do give some links.

But the ISMM International Society for Mountain Medicine paper "An Altitude Tutorial" states:
Quote:
Ginkgo biloba extract
Some early work with Ginkgo biloba extract was encouraging with regards to its use in preventing AMS, but some recent large, well-designed studies have shown no benefit.