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Studies have found concerning contamination rates including incorrect amino acid sequences in 30% of tested products and endotoxin levels exceeding safe thresholds in 65% of samples
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This side effect is usually mild and temporary, but can be uncomfortable
Body processes slow down when these reactions take longer to complete
Vitamin B12, as a water-soluble vitamin, is important for metabolizing nucleic acids as well as fats and carbohydrates
Some people start with weekly doses to quickly replenish depleted stores, while others may only require monthly injections for maintenance
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