can you feel b12 injection right away Feeling worse after Injection: Answering concerns How Can Vitamin B12 Shots

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Eastman S et al

The aim is to determine when B12 will serve as meaningful metabolic support and when your energy issues point somewhere else entirely

It is important however, to know what disease process may be contributing to a B12 deficiency and to follow the correct dosing protocol for oral or injectable B12 supplementation

Peng YC et al

Its recommended to seek medical advice if experiencing the following or if these issues persist or worsen: swelling sensation in the body redness and pain at the injection site temporary itching of the skin mild diarrhea There may also be a risk of: congestive heart failure anaphylaxis polycythemia vera, which is a type of blood cancer peripheral vascular thrombosis, which involves blood clots pulmonary edema If experiencing difficulty breathing, swelling, and hives, patients must seek emergency medical help