The plants people grow these days and the ones you can get on prescription here in the uk do not have the same medicinal properties that the landrace imports had before they were polluted with modern genetics.
Thai is probably the last remaining pure landrace left and it’s only still there because it’s so highly adapted to local conditions where modern genetics can’t survive.
It’s not an accident of people sharing seeds, banning it didn’t work so it’s been deliberately eradicated with genetic pollution,
most people don’t seem to realise what’s been lost.
I rely on it for medicinal reasons so it saddens me that it’s not long for this world. I’m looking for alternatives in other plants which is why I’m interested in witches and other religious traditions, they knew a lot about medicinal plants.