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Some users report noticing improvements in pain and mobility within a week or two, while deeper tissue repair for chronic issues can take several weeks or longer
Inflammatory back pain from AS does the opposite
Hair and skin improvements typically develop over 4 to 8 weeks
This autoimmune condition affects the stomach's ability to produce intrinsic factor, so you can't absorb vitamin B12 through your digestive system
General guidance from MedlinePlus recommends changing sites from one injection to the next and spacing new injections at least 1 inch away from the previous spot
This means that if you take more than your body needs, the excess is generally excreted in your urine, which is why B12 is considered very safe, even at high doses
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