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We need to keep an eye on it: Lack of B12 is one of the most common vitamin deficiencies, and its not something to mess around with

Some common signs of B12 deficiency include: Low energy or fatigue (even after a good nights sleep) Brain fog or memory lapses Mood swings, anxiety, or irritability Numbness or tingling in hands and feet Poor immune function Sound familiar

Its not always as simple as just changing your diet

There has not been a UL (upper intake level) established for B12 because it is not stored in your body and therefore, can not build up enough to cause serious adverse side effects for most people

To overcome this, samples are typically tested at a large dilution to reduce matrix interference and ensure reliable recovery and detection in compliance with USP

Repeat the lot check when the order arrives