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Calcium, Magnesium, Zinc and Vitamin D Plus Vitamin K2 MK-7 Tablets - Osteo Supplement - Vegan Tablets not Capsules 180 Count - Made in The UK by YrHealth : Amazon.co.uk: Health & Personal Care
![James DiNicolantonio on Twitter: "Magnesium is needed to activate vitamin D. Make sure you magnesium intake is adequate is you want your vitamin D to work. https://t.co/zepa4n3A0n" / Twitter James DiNicolantonio on Twitter: "Magnesium is needed to activate vitamin D. Make sure you magnesium intake is adequate is you want your vitamin D to work. https://t.co/zepa4n3A0n" / Twitter](https://pbs.twimg.com/media/EYStAxGWAAAusvs.jpg)
James DiNicolantonio on Twitter: "Magnesium is needed to activate vitamin D. Make sure you magnesium intake is adequate is you want your vitamin D to work. https://t.co/zepa4n3A0n" / Twitter
![Magnesium and metabolism of vitamin D. PTH, parathyroid hormone; UVB,... | Download Scientific Diagram Magnesium and metabolism of vitamin D. PTH, parathyroid hormone; UVB,... | Download Scientific Diagram](https://www.researchgate.net/publication/256188073/figure/fig1/AS:196034627149826@1423749705312/Magnesium-and-metabolism-of-vitamin-D-PTH-parathyroid-hormone-UVB-ultraviolet-B.png)