RainyCloud said...
I noticed they used an alcohol tincture of Cryptolepis, I actually made a thread about this a while ago. It seems that water is a better solvent than alcohol for Cryptolepis:
I hope it helps someone:
https://www.healingwell.com/community/default.aspx?f=30&m=4259578
actually the way i interpret the time-kill curves in the 1st study - the 60% alcohol content Cryptolepis tinctures were the strongest for Bart - in that it killed all Bart persisters in the shortest time
see the graph here
https://www.biorxiv.org/content/biorxiv/early/2020/08/23/2020.08.19.256768/F2.large.jpg
in buhners books he makes clear that Cryptolepis can also be used as a decoction/tea - but the solubility of the active components is very much influenced by the acidity or lack of it in the water
many alkaloids are only soluble in acidic water - and so vinegar or lemon juice is typically used in the water to aid solubility -
i have used Cryptolepis like this in the past as a tea - and can confirm it works OK - but i prefer the tinctures now for convenience and precision in dosing as herxes can be strong and control of the dose is helpful.
Note a tablespoon/ 15ml of vinegar per 500ml of menstruum is used in tincturing this herb - esp if in a hard water area - for the above reasons - the tincture recipe is typically 1:5 60% alcohol - and care must be taken to finely grind the herb as bits of the root are very tough and resilient
its possible the Zhang study may have had even more favourable outcomes if they has acidified the water in the alcohol extract mix