Drug Addiction and Vitamin D Supplementation: How to Address a Health Concern in Methadone Treatment?

authors:

avatar Hosein Effatpanah ORCID 1 , * , avatar Saeed Nateghi 2

Department of Public Health, Asadabad School of Medical Sciences, Asadabad, Iran
School of Medicine, Ziaeian Hospital, International Campus, Tehran University of Medical Sciences, Tehran, Iran
Iranian Journal of Psychiatry and Behavioral Sciences: Vol.14, issue 3; e105346
published online: August 7, 2020
article type: Letter
received: May 19, 2020
revised: June 14, 2020
accepted: June 18, 2020
DOI: https://doi.org/10.5812/ijpbs.105346

how to cite: Effatpanah H, Nateghi S . Drug Addiction and Vitamin D Supplementation: How to Address a Health Concern in Methadone Treatment?. Iran J Psychiatry Behav Sci. 2020;14(3):e105346. https://doi.org/10.5812/ijpbs.105346.

Dear Editor,

A research paper written by Ghaderi and colleagues entitled “The effects of vitamin D supplementation on withdrawal symptoms and the expression of inflammatory cytokines and insulin in patients under methadone maintenance treatment: a randomized, double-blind, placebo-controlled trial” has been recently published in your peer-reviewed journal (1). In our view, the study is novel and important due to two main reasons: first, authors have highlighted the substantial effects of vitamin D supplementation on reducing the side effects of high doses of methadone administration and promoting the quality of life (QoL) in methadone patients (1). Illicit drug use, particularly stimulants, opium, and heroin use, is still a nationwide concern in Iran, which is associated with critical health consequences (2-4). Most importantly, due to the negative effects of illicit drug use on the general health of methadone patients, such as poor mental and physical health, low QoL, and low treatment compliance, this issue is of crucial importance (1-4).

Ghaderi and colleagues conducted a study on 40 methadone patients in Kashan (Iran). Overall, 50,000 IU vitamin D vs. placebo were implementing every two weeks for 12 consecutive weeks (1). The study findings indicated how vitamin D supplementation made a significant change in reducing the side effects of methadone and how patients’ QoL was positively changed (1). Second, the study is important because few studies have investigated the effects of prescribing vitamins in improving the health of methadone patients in Iran. Vitamins are likely to improve the physical and mental health, which may, in turn, promote methadone treatment outcomes. The role of minerals and vitamins in reducing psychiatric disorders has been well-established in the international research literature (5). But, more similar research studies are needed on methadone patients in Iran.

In our view, Ghaderi et al.’ trial study (1) aimed to identify and investigate a widespread health problem in Iran is influential. Obviously, a number of patients may leave methadone treatment due to the lack of sufficient vitamins, supplements, low QoL, and the potential negative impacts of methadone on their well-being. However, Ghaderi et al.’s study (1) has several key points which should be taken into consideration in designing future studies:

1) Ghaderi et al.’s research trial (1) is a small study that may not be generalizable to all methadone patients. Therefore, a larger randomized controlled trial study is needed. Also, special attention should be paid to gender differences. Women may need more vitamin D supplementations than men. This issue needs to be investigated in future studies.

2) The sample size is not representative of the target population. Therefore, a larger sample size is needed to evaluate the impacts of vitamin D supplementation;

3) More centers should be included to evaluate better the impacts of vitamin D supplementation at a larger multicenter level;

4) In their study, the method of sample size calculation, randomization, and group allocation need to go further and include a detailed statistical description for designing future studies; and

5) The literature review indicates that the field of psychological treatments in methadone treatment services is emerging in Iran (6-8). Other important issues, such as the role of psychotherapy in health promotion, have been investigated in the research literature (9-11). A combination of psychological treatments, prescribing vitamin D, and even regular physical exercise needs to be considered in future studies to evaluate the relevant long-term impacts on positive methadone treatment outcomes.

Most importantly, as a new research study in Iran, the paper benefits the clinicians and senior drug researchers by providing a summary of the existing evidence, generating new hypotheses, and revealing the research gaps. We suggest that the effects of combined use of vitamins, particularly vitamin D, and regular physical exercise on the methadone treatment outcomes and health promotion be investigated in future studies.

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