> New Health Minister Cholnan Srikaew has announced that cannabis extracts containing more than 0.2 percent of the active ingredient tetrahydrocannabinol, or THC, will be classified as narcotics.

If my math is correct (100 / 0.2 * 5 / 1000), 2.5 grams (if you're an imperial person, a gram bag is a 1 inch by 1 inch bag) of that cannabis extract will get you as high as a regular joint (which has 5mg of THC).

So that sounds conservative, but still permissive.