Am I imagining this? I can think of several substances that could kill you if you take enough *.  But consumer and health authorities just make buying it poor value and inefficient. For example, Benzyl benzoate lotion (25%) an insecticide, which is very effective topically for scabies, is not made a not criminal act to posess or sell it, just a PITA to buy in sensible quantities. So, what do people do? They buy ten small bottles. This practice is, of course, not unique to Thailand.

 

Likewise cough syrup with tincture of opium. Again, very effective (perhaps due more to the licorice). It seems that the harm reduction philosophy is exemplified in cannabis but not for pharmaceuticals or food.  I would actually be happy to see labelling laws such as any prepared food item with more than 8% sugar in it to have a red dot on the package. Would save a lot of time scanning shelves instead of reading fine print. What is done in India for vegetarian products is a green dot.  Whatever is important to Thais could be coded - less than three food additives?

 

* "In dose, everything is poison" Paracelsus

58 minutes ago, HermesHermes said:

Am I imagining this? I can think of several substances that could kill you if you take enough

Then why imagine it?

Stop taking the drugs you seem to be taking and give your brain cell a rest!