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Randomised trial, 2009

Does vitamin B6 (pyridoxine) help with premenstrual syndrome symptoms?

This question cannot be answered here: the title refers to a trial of vitamin B6 for PMS, but the abstract text supplied is actually about the chemistry of breaking down dextran (a sugar polymer) using ultrasound, with no mention of vitamin B6, PMS or any women at all.

Early or limited evidence Not applicable: the abstract describes laboratory dextran samples, not a human PMS study

What they did

The abstract describes a lab chemistry experiment: six dextran samples of different starting molecular weights were broken down using ultrasound, and their molecular weight was tracked over time with a lab technique (HPGPC). This is not a study of people, vitamin B6 or PMS.

What they found

As ultrasonic treatment continued, the dextran samples' average molecular weight and spread of molecular weights (polydispersity) decreased. Higher starting molecular weight samples broke down more, especially early on. A mathematical model (Malhotra model) fit the molecular weight data well, and a 'midpoint scission' model best matched how the dextran chains broke, with a strong statistical fit (R2 > 0.99).

What it means for you

Because the abstract text does not match its title, there is no usable information here about vitamin B6 or PMS. This looks like a data mix-up, so no practical takeaway for PMS can be drawn from it.

6

dextran samples tested

>0.99

model fit (R2)

About the study

Original title
The Evaluation of the Effectiveness of Pyridoxine (Vitamin B6) for the Treatment of Premenstrual Syndrome: A Double Blind Randomized Clinical Trial
Authors
Maryam Kashanian, Maryam Kashanian, Robabeh Mazinani et al.
Journal
Journal of Nutrition Education and Behavior
Year
2009
Study design
Randomised trial
What was tested
None relevant to PMS; the abstract describes ultrasonic treatment of dextran in a lab

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