how fast does a b12 injection work Quickly Shot Work? What to Expect How quickly does a B12

When Should You Consider a B12 Injection

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Typical dosages range from 1000 mcg, varying by administration frequency

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

Comparing to Oral Supplementation Doses Its important to note that injection doses are much higher than oral supplements