do i need b12 injections Vitamin Injection Dosage B12 Shots at Home: How,

Not all B12 that you eat or take in supplements is absorbed and research indicates that to achieve a sufficient daily dose of B12, you should take at least five to 50 micrograms daily or 1,000 to 2,000 micrograms weekly (Del Bo et al., 2019

Wainwright P, Narayanan S, Cook P Clinical biochemistry 2015

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Unlike oral supplements, these injections bypass the digestive system and deliver B12 directly into your bloodstream, making them ideal for people with absorption issues or chronic deficiency