The usual daily recommended amounts of methylcobalamin, vitamin B12 either through dietary intake or supplementation should be taken during pregnancy (see Dosage)
A study showed that people with diabetic neuropathy got better symptoms with regular B12 shots
For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): How much is the shipping
After having a B12 shot, a person should monitor for adverse symptoms and seek medical help if they experience: severe pain at the injection site mild diarrhea a swelling sensation in the body temporary itching of the skin In rare cases, a person may also be at risk of: pulmonary edema peripheral vascular thrombosis, which involves blood clots polycythemia vera, which is a type of blood cancer If anyone experiences difficulty breathing, hives, and swelling, they need emergency medical help
Therefore, you should research the best vitamin B12 supplements
these are not immunity or vitamin boosters for healthy people