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Input: Haiphong (Vietnam) (AFP) â During four years of compulsory rehab in Vietnam   Trung  spent  his  drug-free days gluing together false eyelashes as part of what authorities billed as valuable âwork therapyâ for  his  heroin addiction.
But critics say the work of  Trung  and tens of thousands of others is tantamount to forced labour that rarely helps users extinguish their addiction.
Police sent  Trung  to a state-sponsored rehab centre on the outskirts of Hanoi  one of 132 in Vietnam  where  he  says  he  faced routine beatings from guards and hours of labour for nominal pay.
 He  started using again soon after  his  release in 2014 â up to 80 percent of addicts from the centres relapse  according to official figures.
 Trung âs labour therapy has since been replaced by a daily shot of methadone from a government-run drop-in clinic  which  he  insists is the only effective treatment  he  âs  had.
Today  he  says  he  is keeping the addiction at bay  and is trying to mend ties with  his  only son.
Sometimes they house other marginal groups â the mentally ill and disabled  the homeless  the elderly â along with addicts like Trung  who support the treatment model on paper even if they resent the abuse inside.

Cold turkey at Vietnam's compulsory drug rehab centres