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Experts recommend getting the standard daily B12 requirement of about 2.4mcg

Additionally, researchers use this formulation in tissue-related research models

Weakness and numbness in the hands and feet: Vitamin B12 deficiency can cause nerve damage, which can result in numbness or tingling in the hands and feet, as well as muscle weakness

the compound's evidence base is limited to preclinical in vitro and animal (largely rodent) studies of IGF-1 receptor activation, muscle-cell signaling, and tissue repair, with human safety and efficacy data for this specific analog effectively absent

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