Originally Posted by hoppymonkey
Safole Oils contain quite a bit of carcinogens and was taken out of root beer in the 70s. It is used as a precursor to make MDMA so not something I would want to add to any beverage I make , but hey I had sassafrass root as a child too.
Eugenol is a precursor for MDMA and it comes from cloves.
Fenugreek is both a faux-maple flavoring and a precursor for many drugs.
Being a precursor isn't an indication of anything but being a handy molecular structure.
Safrole is considered a weak carcinogen in rats, only because it is metabolized by rat digestive systems into metabolites that are carcinogenic. Research has not found the same metabolites in human consumption.
The stuff was banned because it's way easy to turn it into methamphetamines (of which MDMA is a close relative). No other reason.