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Product-specific sterility, endotoxin, bioavailability, and long-term stability also require separate evidence
Cyanocobalamin is a synthetic form of B that contains a cyanide group, whereas hydroxocobalamin is a naturally occurring form produced by bacteria
Neurological Symptoms Several Weeks to Months If you have tingling, numbness in your hands or feet, or balance problems caused by B12 deficiency, these symptoms take longer to improve
A 0.60 mL draw may be unusually large for one subcutaneous site
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