Guys, you can post confused and laughing emoticons all you want, but I am a grower, and it is impossible to grow outdoors, where the brick weed is grown without some sort of pest control.
Thai farmers use a lot of glyphosate on other crops which has been proven to cause cancers.
Here is a study from the US about brick weed containing harmful chemicals. Paraquat was applicated to control the illicit grows in Mexico. Until recently, paraquat was widely used in crops in Thailand. https://www.unodc.org/unodc/en/data-and-analysis/bulletin/bulletin_1978-01-01_4_page006.html
I can assure you the Thai stuff will not be organic, so I suggest be mindful of what you are consuming.