The herb kratom has a large following and is so popular that it is sold in vending machines. The FDA recently issued a public warning about the herb, which contains low levels of opioids.
The trend toward marijuana legalization is growing, but the legality, or illegality, of cannabis at the federal level hasn't changed at all.
Bolivia is the first cocaine-producing country to take a harm reduction approach to tackling the drug trade.
Complaints about the ban of kratom, often used by recovering opiate addicts, have been vociferous, but not always backed by facts.
147m people used the drug last year. We need to know much more about it.