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Others less frequently are for deeper (and sometimes painful) intramuscular injections
These complementary mechanisms suggest potential synergy
Because the fatty tissue has fewer blood vessels than muscle, the absorption is more of a steady trickle than a rush
Many people who experience fatigue and a lack of energy may be suffering from a B12 deficiency
[9] [5] It is given by mouth, by injection into a muscle, or as a nasal spray
[32] Can injections be self-administered
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