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Adjustments may be made based on the individual response and any emerging complications
Key Takeaways The standard initial dose for severe deficiency is 1,000 mcg intramuscularly daily or every other day
If you suspect you have experienced side effects from a prescribed B12 medicine, you can report this through the MHRA Yellow Card scheme
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
This includes fat accumulation in the organs and tissues, particularly the liver
Individuals with risk factors for B12 deficiency including strict vegans, those with gastrointestinal conditions, patients taking long-term metformin or proton pump inhibitors, and older adultsshould discuss screening with their GP, even in the absence of obvious symptoms
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