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There is no universal protocol
It contains no preservatives or added ingredients
Since your body cannot absorb naturally produced B12 from gut bacteria, animal-based dietary sources like meat, fish, eggs and dairy[5] as well as fortified foods or supplements are necessary to meet daily needs
The article in AP came out today
How Vitamin B12 Affects Sleep and Energy Levels Understanding the relationship between vitamin B12, sleep, and energy requires examining the vitamin's physiological roles and its impact on neurological function
Spine 34 , 199205 (2009)
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