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Vitamin B12 plays a crucial role in the production of DNA, the functioning of the brain and nervous system, red blood cell formation and enhancing energy metabolism from fats and carbohydrates
human bioavailability is unknown Subcutaneous injection Human subcutaneous bioavailability and pharmacokinetics are unknown Factor Convenience Oral capsules No mixing or syringe math Subcutaneous injection Requires reconstitution, sterile supplies, and injection-site planning Factor Evidence limits Oral capsules No controlled human dose, benefit, or safety trial Subcutaneous injection No controlled human dose, benefit, or safety trial Factor Can the amounts be treated as equal
The ordering process was very straightforward, and all the instructions and information I needed was provided in a proactive manner
Definitions of elevated levels seem to be a bit wobbly, and a lot more, high quality evidence is definitely required
