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Oral capsules or tablets are generally more stable and easier to store, typically requiring only a cool, dry place away from direct light
Vitamin B12 provides a boost of energy and plays a key role in the digestion and metabolism of fats, proteins and carbohydrates
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2.5 Quality assessment and risk of bias In line with PRISMA guidelines, the assessment of methodological quality was conducted to evaluate the strength of evidence, recognising that methodological limitations may introduce bias
Less acid means less available B12
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