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Preservative-free formulations
Injections are given subcutaneously abdomen, thigh, or upper arm are best
How B12 Injections Work Healthcare professionals administer B12 injections intramuscularly, typically in the arm or buttock
Table of Contents: Can B12 shots interact with any medications
For example, one study found that administration of DSIP significantly decreased sleep latency (how long it takes to fall asleep) and increased the amount of slow-wave sleep (delta wave sleep) in animal models
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