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how safe are vitamin b12 injections Injection Walk-In Clinic North West UK How to Give B12 Injections
Description
Any underlying medical issues would need to be treated

No hormonal effects
In a supplement containing 50 mcg of Vitamin B12, you absorb about 1.5 mcg of thatand only 0.1 to 0.6 mcg if you have a problem with absorption or have pernicious (autoimmune) anemia

If you're tired after B12 shot or experiencing worsening symptoms, there are several steps you can take to mitigate these effects and optimize the benefits of B12 supplementation