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Common signs include extreme tiredness, low energy, pins and needles, muscle weakness, disturbed vision, low mood, diffuse hair loss and even premature greying
Systemic side effects from the tiny amount of benzyl alcohol in each dose are exceedingly rare in adults
However, if you do have blood work done note that the drawback is that the current widely used test to check B12 levels only measures the total amount o vitamin B12 in your blood, meaning, it measures the forms of active B12 which your body can use and process as well as the inactive forms which cannot
Toxicological studies have delved into the hemolytic activity of BV in various species, such as horses, humans, sheep, and rabbits, shedding light on its cytotoxic effects
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