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Note that taking other forms of vitamin B, specifically folate or folic acid, may interact with methotrexate (Trexall)

I felt like I wasn't going to make it through the next hour before starting b12 and then had severe side effects for a few weeks or so

Vitamin B12 keeps the bodys blood cells and nerves healthy, and also helps to make DNA, the genetic material within cells

As a peptide that declines with age and intersects with many well-established longevity pathways, it stands to have significant effects on age-related decline - Cardiometabolic health: Research suggests improvements in several markers associated with metabolic syndrome, but more studies are required regarding cardiovascular outcomes in humans