Avoid injecting directly around the navel area, as this is more sensitive
Important: Patients with Leber hereditary optic neuropathy should not take methyl B12 shots
Excellent dietary sources include: Liver and organ meats : Beef liver provides approximately 70 mcg per 100gfar exceeding daily needs Shellfish : Clams, mussels, and crab are exceptionally rich sources Fish : Salmon (5 mcg per 100g), trout, tuna, and mackerel provide substantial amounts Meat and poultry : Beef, lamb, and chicken contain 13 mcg per 100g Dairy products : Milk (0.4 mcg per 100ml), cheese, and yoghurt contribute meaningfully Eggs : One large egg provides approximately 0.6 mcg For vegans and vegetarians , reliable B12 sources are essential as plant foods contain no bioavailable B12 (despite some claims about algae or fermented products)
Inject slowly : Insert the syringe needle through the rubber stopper of the peptide vial and inject the bacteriostatic water slowly against the glass wall do not inject directly onto the powder
In those cases, the decision between B12 injection vs IV leans toward infusion because it addresses more than one variable at a time
