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  1. Effects of Kratom (Mitragyna Speciosa Korth.) Use in Regular Users
    Singh D, Narayanan S, Grundmann O, Dzulkapli EB, Vicknasingam B
    Subst Use Misuse, 2019;54(14):2284-2289.
    PMID: 31347441 DOI: 10.1080/10826084.2019.1645178
    Background: Mitragyna speciosa (Korth.) or kratom is an indigenous medicinal plant of Southeast Asia. Kratom is widely reported to have dose-dependent effects based on available literature, but to our knowledge, this has not been established conclusively. Objective: This study sought to evaluate if kratom use produces dose-dependent effects, with a stimulant effect at low doses and a sedative effect at high doses, in a sample of regular kratom users. Methods: A total of 63 regular kratom users participated in this cross-sectional study. The Brief-Biphasic Alcohol Effects Scale (B-BAES) was used to determine subjects self-report kratom use experiences. Results: Almost all in the sample were male (98%, n = 62/63), and the majority of subjects were Malays (94%, n = 59/63). The mean age of the subjects in the sample was 43.8 years (SD = 12.1). Seventy-five percent (n = 47/63) have >5 years kratom use history, and 65% (n = 41/63) consumed >3 glasses of kratom daily. Results from first test showed no significant difference in the stimulant (t61 =0.371, p 3 glasses a day or less than this amount, regardless of duration of use. In the second test, no significant differences in the mean scores were found among those who consumed >3 glasses daily or less than this amount among short-term or long-term uses. Conclusions: Daily kratom use produced both stimulant and sedative effects but they were not statistically significantly associated with the dose consumed, both among short-term and long-term users in our sample.
  2. Motives for using Kratom (Mitragyna speciosa Korth.) among regular users in Malaysia
    Singh D, Narayanan S, Müller CP, Swogger MT, Chear NJY, Dzulkapli EB, et al.
    J Ethnopharmacol, 2019 Apr 06;233:34-40.
    PMID: 30594604 DOI: 10.1016/j.jep.2018.12.038
    ETHNOPHARMACOLOGICAL RELEVANCE: The leaves of Mitragyna speciosa (Korth.) or kratom have been traditionally used in Malaysia and Thailand mainly to enhance work productivity, as a folk remedy for treating common ailments, and as a mood enhancer.

    AIM OF THE STUDY: This present study sought to investigate kratom use motives among regular kratom users in Malaysia.

    MATERIALS AND METHODS: A total of 116 regular kratom users were recruited for this cross-sectional survey. The Drinking Motives Questionnaire (DMQ) was administered to measure kratom use motives.

    RESULTS: Our results indicate that heavy (>3 glasses daily, each glass contains 48.24-50.4 mg of mitragynine) kratom use was associated with coping (t87.09 =3.544, p 3 glasses daily) kratom consumption (p 3 glasses daily) kratom consumption among regular kratom users in traditional, rural settings.

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