JAKARTA - The indigenous West Kalimantan people have been using kratom, a controversial herbal supplement with psychoactive properties, for centuries to treat cough, pain, depression and improve sexual performance.
In the United States - where kratom is a US$1.2 billion (S$1.7 billion) and growing industry - the herb has widely been used as natural pain killers and to lessen symptoms of opiate withdrawals.
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