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According to Harvard Medical School, vitamin B12 is naturally ingested through the food we eat, and cannot be made by the human body

Even then, not everyone absorbs it well

told Siegel in their latest interview that he believes "not all peptides are created equal, whereas some are helpful, others may not be and need further study." "I agree with that," Siegel told Fox News Digital

They may be useful for people with gastrointestinal issues, older adults, vegans, and vegetarians

Cobalamin separates from the protein during digestion, and a substance called intrinsic factor binds to cobalamin for the body to absorb it into the blood

Rx Vitamin B-12 (Generic) Injectable Solution