The Effects of Thiamine Supplementation on General Health and Infertility Treatment Outcomes in Women with Polycystic Ovary Syndrome: A Triple-Blinded Randomized Placebo-Controlled Clinical Trial

Document Type : Original Article

Authors

1 School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran

2 Department of Midwifery, Reproductive Health, and Pregnancy, School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran

3 Nursing and Midwifery Care Research Center, Iran University of Medical Sciences, Tehran, Iran

4 Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran

5 Sarem Fertility and Infertility Research Center (SAFIR) and Sarem Cell Research Center (SCRC), Sarem Women’s Hospital, Iran University of Medical Science (IUMS), Tehran, Iran

Abstract

Background: The aim of this study was to evaluate the effects of thiamine (vitamin B1) on general health and infertility
treatment outcomes in women with polycystic ovary syndrome (PCOS).
Materials and Methods: The study is a triple-blinded, randomized, placebo-controlled clinical trial performed on 64 infertile
women with PCOS referred to Sarem Hospital in Tehran, Iran. The primary outcomes of the study were general health
and infertility treatment outcomes. Eligible women were randomly assigned to the vitamin B1 group (n=32, vitamin B1
tablet at a dose of 300 mg/day for 4 weeks) or the placebo group (n=32, placebo tablet daily for 4 weeks). A general health
questionnaire was completed before and after the intervention by both groups and treatment success was evaluated at the
end of the study. Data were analyzed using SPSS software ver.16 P<0.05 was considered statistically significant.
Results: The mean age of participants in the vitamin B1 (VB1) group was 30.4 ± 3.27 years and in the placebo (Pl)
group was 29.1 ± 2.66 years with the mean duration of marriage 12.7 ± 3.01 and 13.2 ± 2.97 years respectively. Our
results showed that there were significant differences between the two groups in overall score (P<0.001) and scores
for all domains of the general health questionnaire including somatic symptoms (P<0.001), anxiety and insomnia
(P<0.001), social dysfunction (P=0.028), and severe depression (P<0.001) after the intervention. Four weeks of consumption
of vitamin B1 also resulted in higher numbers of positive pregnancy tests (P=0.006), although the number
of fetuses was not significantly different between the two groups after the intervention.
Conclusion: The results of the current study support a possible favourable effect of vitamin B1 on improving general
health, infertility treatment outcome, and retrieved follicle count without changing the number of fetuses in women
with polycystic ovary syndrome (registration number: IRCT201510266917N3).

Keywords

Main Subjects

References

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International Journal of Fertility and Sterility
Volume 18, Issue 2
April 2024
Pages 128-134

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