Government treatments offer, almost exclusively,
methadone detoxification although some of the Northern clinics do provide tincture of opium
for hilltribe opium smokers (Poshyachinda 1988). The programme is largely the same across
the country. Detoxification lasts 4 to 6 weeks and methadone is consumed on the premises.
Around 60% of drug users leave treatment after 4 weeks when levels of methadone dispensed
have dropped to low levels (Poshyachinda 1988).