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Low levels of vitamin B can affect everything from your energy and mood to memory, sleep, and immune function
1999 Aug 12;1451(1):116
When administered by trained professionals
When Injections May Be Preferred B12 injections may be preferred when a patient has been advised that injections are suitable, when absorption is a concern, when deficiency has been confirmed and requires injection treatment, when tablets are not practical, or when a patient wants professionally administered support after a suitability check
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