"Under the current narcotics law, possession of more than 15 methamphetamine pills is regarded as possession with intent to traffic and the penalties range from four years to life imprisonment and/or a fine from 400,000 to 5,000,000 baht.
Those who possess fewer than 15 tablets are currently regarded as “patients”, and will be sent for rehabilitation."
Which is quite lenient indeed, but unsurprisingly they got the wrong end of the stick; they should have introduced a mandatory death penalty for production and/or large scale transportation, etc.