[david-gpu]

> Are there regulation on the production of cannabis on sale ? concentration and limits in amount of impurities etc ?

Yes, it is regulated. However, growers get to choose which labs they send their samples to. With those incentives, you can guess what happens next.

Other than that, I agree with the GP: nothing has really changed; those who smoked continue to do so, often relying on the cheaper black market; those who didn't like it continue to not partake.

I vape once every few months and it is nice to have access to legal weed with transparent pricing.