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Folate supplementation must not be started before B12 deficiency is treated, as this can precipitate or worsen neurological complications
The US National Academy of Medicine updated estimated average requirements (EARs) and recommended dietary allowances (RDAs) for vitamin B 12 in 1998
The form of B12 matters too
doi:10.2903/j.efsa.2008.815
In contrast, subcutaneous injections are painless, because its mostly fat tissue youre penetrating
The average person in good health can expect to experience around 165 needle sticks during their lifetime
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