I'm from one of such Himalayan villages, though I only seldom go back there now. One important aspect to consider here is people don't necessarily think of it

I'm from one of such Himalayan villages, though I only seldom go back there now. One important aspect to consider here is people don't necessarily think of it as illegal or a drug. There isn't really 'police' enforcing anything for the local. The local police station has like 1-2 people who pretty much just hang out and are friends with the locals. Everyone in the village knows each other (sort of) and it is only the adult (males) that will have access to and make it. Teens and children don't really do it because someone or the other will find out and then they are in trouble, so the system corrects itself pretty quickly. I've never heard of a single case ever of overdose or anything like, though it has ruined the productivity and general health of a very large number of people.