People interested in metabolic support often explore multiple treatment options
Excessive NAM depletion directly reduces the substrate supply for NAD+ synthesis, leading to decreased intracellular NAD+ levels
For such reasons, manufacturers must warn users, or those who are considering using their supplements, of the possibility that something of that nature can go wrong
Their effects on weight loss may be due to other mechanisms and methods of administration
For example: Fatigue, unexplained weight loss, or abdominal pain may indicate liver disease or cancer Easy bruising, night sweats, or feeling full quickly (early satiety) may suggest a myeloproliferative disorder Swelling in the legs, reduced urine output, or persistent nausea may point to kidney disease In cases of very high B12 from injections (not oral supplements), some people have reported headache, nausea, diarrhea, facial flushing, or skin rash