A long time fan of all things alternative, I was immediately interested.
The locals in our group explained that the herbs were taken in teas or whiskeys, and promised to cure everything from impotence to flatulence.
For a few baht, we could try a sampler.
The men folk tried a tea that promised to enhance their virility and, ahem, libido.
I went for a concoction that would aid my sleep and ease my arthritic aches and pains.
The tea was pleasant to taste, with a warming sensation as I drank. I was told it probably contained alcohol as well!
I decided against taking any back with me, since Australian Customs would be sure to nab it, but I did sleep well that night. (I asked the men if their tea had any effect on their sleep - or otherwise - but their answers are classified).
Readers, do you like to try local remedies when you travel?