Published preclinical data in rodents suggests doses equivalent to 200mg+ in humans produce off-target effects on folate metabolism and S-adenosylmethionine (SAMe) pools
Pregnant women: 2.6 micrograms (mcg) per day Breastfeeding women: 2.8 mcg per day Nonpregnant women: 2.4 mcg per day Best foods with vitamin B12 during pregnancy Vitamin B12 is only naturally found in animal products, like fish, meat, poultry, eggs, and dairy
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During the initial treatment phase, your body begins the process of rebuilding B12 stores in the liver, which can take several weeks to months depending on the degree of depletion
J Nutr Sci
Any references to insulin-like growth factor, growth-related pathways, or metabolic endpoints are provided for scientific context only