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Copied text from Wikipedia article Megavitamin-B6 syndrome -- see the page's History for attribution under the CC BY-SA 4.0 License and the GFDL, still, the copied text is written by User:Maxim Masiutin. Please also see explanation at https://en.wikipedia.org/w/index.php?title=Talk:Vitamin_B6&oldid=1214753440#Half-Life on why this change is needed. |
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Pyridoxine is in the [[vitamin B]] family of vitamins.<ref name=AHFS2016/> It is required by the body to make [[amino acids]], [[carbohydrates]], and [[lipids]].<ref name=AHFS2016/> Sources in the diet include [[fruit]], [[vegetables]], and [[food grain|grain]].<ref name=NIH2016/>
It is also required for muscle phosphorylase activity associated with glycogen metabolism.
==Metabolism==
The half-life of pyridoxine varies according to different sources: one source suggests that the half-life of ''pyridoxine'' is up to 20 days,<ref name="days20">{{cite journal|dopi=10.1007/978-3-319-20790-2_174-1|quote=The half-life of pyridoxine is up to 20 days.}}</ref> while another source indicates half-life of ''vitamin B<sub>6</sub> in range of 25 to 33 days.<ref name="VKM2017">{{cite book |title=Assessment of vitamin B<sub>6</sub> intake in relation to tolerable upper intake levels. Opinion of the Panel on Nutrition, Dietetic Products, Novel Food and Allergy of the Norwegian Scientific Committee for Food Safety |isbn=978-82-8259-260-4 |location=Oslo, Norway |url=https://vkm.no/download/18.645b840415d03a2fe8f2653d/1499330353450/087ba2170f.pdf |access-date=2019-12-07 |archive-url=https://web.archive.org/web/20191117011203/https://vkm.no/download/18.645b840415d03a2fe8f2653d/1499330353450/087ba2170f.pdf |archive-date=2019-11-17 | quote=Eighty to ninety percent of vitamin B6 in the body is found in muscles and estimated body stores in adults amount to about 170 mg with a half-life of 25-33 days.}}</ref> After considering the different sources, it can be concluded that the half-life of pyridoxine is typically measured in several weeks.<ref name="days20"/><ref name="VKM2017"/>
==History==
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