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Three RCTs met inclusion criteria The trials randomized 153 participants (74 participants to oral vitamin B12 and 79 participants to IM vitamin B 12 )
These vitamins, including B1, B2, B3, B5, B6, B7, B9, and B12, play a critical role in converting nutrients into usable energy and supporting cognitive and physical performance
Wilking, M., Ndiaye, M., Mukhtar, H
" The package was packed neatly, and the ice packs were still frozen upon delivery
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