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Safety and Metabolism of Long-term Administration of NIAGEN in Healthy Overweight Adults
We also address any side effects or concerns
Research indicates that it works by: Increasing blood vessel formation (angiogenesis) to enhance nutrient delivery to injured areas
I heard it can be toxic
Summary: Vitamin B12 supplements can occasionally cause mild stomach side effects including nausea, diarrhoea, abdominal cramping, and indigestion, though these are generally uncommon and temporary
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