b12 pills vs injections supplement Shots vs. IV Infusions: What is the difference? 7 Key Benefits of Vitamin – Vitamin B12 Oral vs Injection​

B12 injections for pernicious anaemia Harvard Health Publishing explains that intramuscular B12 injections are particularly helpful for treating pernicious anaemia

This is the most popular site due to the ample subcutaneous fat layer and ease of access

Neither compound holds a valid Marketing Authorisation in the UK or EU

Per VetOne's website each mL of liquid contains: Cyanocobalamin (Vitamin B-12) 1000mcg, sodium chloride, ammonium sulfate, citric acid, sodium citrate, and benzyl alcohol (preservative)

Who Should Avoid B12 Injections

Sublingual preparations are available, though evidence for their superiority over standard oral tablets is limited, and they are not routinely recommended in UK clinical practice