very easy, no need to approach a candyman (candyman means drug peddler or drug dealer), just get a prescription from a doctor for pain, etc. Doctors make tons of $$$ from giving pain prescriptions
I know in Malaysia it's prohibited. When i went to Singapore, upon arrival at the airport, you'll see warning signs everywhere that drug traffickers will face death punishment. I went to the island of Batam to play at the casino and you see the same warning signs everywhere