This is absolutely fantastic for the brain fog / cognitive dysfunction

There is actually - surprisingly- a randomised control trial demonstrating ginko's effectiveness in ME/CFS that's out there, which you'll easily be able to find. I have found ginko pill supplements fairly helpful, but nowhere near as much as this specific product. I'm not sure whether it is the ginko PLUS the nettles (potentially PLUS the ginger?) in this tea that helps me so much. It may simply be that this tea is more bioavailable than supplements, or contains more of it. But it certainly does help a hell of a lot. I noticed a decline in my health over a week without it - and practically immediate relief when I got more. This may be to thank for my ability to read a reasonable amount despite cognitive dysfunction/memory loss/brain fog being a prominent feature of what I'm dealing with. It only just falls short of 5 starts because it's not curative - it just provides significant relief (which is conducive to recovery) and is almost certainly very safe.