What the Authoritative Sources Say About B12 Deficiency and Supplementation The National Institutes of Health Office of Dietary Supplements publishes the most thorough citation-backed overview of vitamin B12 its role in red blood cell formation and neurological function, the populations most at risk for deficiency (older adults, people on long-term metformin or proton pump inhibitors, vegetarians and vegans, people who have had gastric bypass surgery), and the recommended daily intake at each life stage
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SAFETY & SUITABILITY Vitamin B12 and C are water-soluble, meaning any excess is naturally eliminated by the body via urine
A reputable clinic should not lean on toxin release to wave away a reaction that deserves a proper explanation
Both work fine alongside GHK-Cu when separated
A blood test is the most reliable way to confirm whether B12 deficiency is a contributing factor