For adults over the age of 50, 25-100 mcg per day or higher is recommended, especially for those with absorption issues or risk factors for deficiency
Researchers know that "one solvent does not fit all." The choice of reconstitution medium depends entirely on the isoelectric point (pI) and the hydrophobicity of the peptide sequence
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However, one study reported that children and adults with normal to elevated levels of serum vitamin B1 had many symptoms normally associated with vitamin B12 deficiency, including fatigue, depression, anxiety, lack of motivation, poor memory, fuzzy thinking, peripheral neuropathy and difficulty sleeping
First day care (0 to 24 hours) Avoid heavy exercise, prolonged heat exposure, and rubbing the site