THailand has been known for "easy steroids and other (sports) performance enhancing drugs" (including body building). I don't know the number of (drug) 'tourists' but in conversions with various people in AUS, everyone has knowledge of "easy/over the counter steroids" in Thailand.

No on know the sources of these types of drugs, China and India are suspected. But today's backyard chemists, mets technicians and DIY recipes are not hard to find. So who knows?