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Aging reduces NAD+ synthesis pathways while increasing consumption by enzymes like CD38 and PARPs, activated by inflammation and damage.[13][15] CD38, an immune-related enzyme, ramps up with age, breaking down NAD+ precursors

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But some might feel pain at the injection site, mild diarrhea, or itching

Available in 2 MG, 5 MG and 10 MG vials, supplied as lyophilized powder for reconstitution