The general math works as follows: Example A: 5,000 mcg vial + 2 mL bacteriostatic water: Yields 2,500 mcg per mL
See all our nutrient recommendations for vegans in Daily Needs.
When deficiency is confirmed, replacement can support blood count recovery and may help prevent worsening nerve problems related to low B12
Vitamin B12 injections may be suitable for people who: Have a diagnosed B12 deficiency Feel constantly tired or low in energy Eat a vegan or vegetarian diet Have absorption issues such as pernicious anaemia Have difficulty absorbing B12 from food Want to improve their overall wellbeing Our pharmacist will discuss your symptoms to determine if the service is appropriate for you
For this reason, high-dose oral supplementation or alternative delivery routes are preferred: High-dose oral cyanocobalamin tablets (typically 1,000 micrograms daily) are the standard oral option in the UK
Vitamin B12 absorption and metabolism Vitamin B12 is a complex biomolecule that plays a vital part in key biochemical reactions
