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Unexplained elevations above 1,000 pg/mL warrant further investigation, not panic, but not dismissal either

If you drink or have ever drunk large quantities of alcohol

If you regularly work out and do strength training, B12 injections might be key to enhancing your strength

Serious side effects are rare but can happen in some people

However, none of the three-level hierarchical models showed any significance among all possible comparisons of administration routes (Figs

Most people are good candidates, but especially those who are vegetarian or vegan, take medications that deplete B12, have gut or absorption issues, or are dealing with chronic fatigue and brain fog