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[1] If you are already taking B12 supplements, inform your doctor, as this may affect test interpretation
The standard approach starts at 2.5mg weekly for four weeks, then escalates in 2.5mg increments every four weeks based on tolerance and response
Additionally, because injections bypass the digestive system, they are not subject to the exact breakdown and loss of potency that can occur during digestion
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These injections are key in treating fatigue and brain problems caused by low B12
Persistent effects beyond two weeks suggest considering dose reduction
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