vitamin b12 high dose injection Sandoz Injectable Solution - 1000 mcg/10 mL Cyanocobalamin Vitamin B12 Injection 1000

The dose for IV vitamin B12 therapy can range from 1,000 to 5,000 mcg

When adverse effects occurred, they were typically mild and transient, with the most common being mild to moderate headaches (similar frequency to placebo groups), minor injection site reactions (redness, slight swelling), and gastrointestinal effects at higher oral doses (nausea, diarrhea)

Hydroxocobalamin | Drugs | BNF NICE

Just like with your skin, you need to let it air-dry for about 30 seconds before inserting a needle

A mild stinging sensation is common with this compound because of its quinolinium chemistry

Whether the product is a needle only or a syringe with a needle