how much b12 should be injected Vitamin Injection Dosage for Adults: Guidelines B12 Injection Dosage and Frequency:

Once you break the seal on any water for injection, its open to contamination

It contains methylcobalamin (vitamin B12), pyridoxine (vitamin B6), niacinamide, and D-panthenol, which support the healthy functioning of the brain and nervous system, aid the formation of red blood cells, and help maintain healthy haemoglobin levels

In the UK, B12 levels are measured in picomoles per litre (pmol/L), with normal values typically above 258 pmol/L

It is indicated only for diluting or dissolving drugs for intravenous, intramuscular or subcutaneous injection, according to instructions of the manufacturer of the drug to be administered