How B12 Injections Are Given Injections are administered by a healthcare professional, usually into a muscle
Evidence is increasing that elevated levels of some other B vitamins and some minerals are also associated with increased harm
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[DOI] [PMC free article] [PubMed] [Google Scholar] 237.Yamamoto H, Schoonjans K, Auwerx J
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
(1996) A multicenter study of sleep-wake rhythm disorders: therapeutic effects of vitamin B12, bright light therapy, chronotherapy and hypnotics