NAD+ Intramuscular Dosing Recommendations
Available Evidence for NAD+ Precursors
- Adult males require 16 mg/day of niacin, a NAD+ precursor, and adult females require 14 mg/day, with parenteral nutrition protocols using 40 mg/day, according to Praxis Medical Insights 1
- The maximum safe dose of nicotinamide, a NAD+ precursor, is 12.5 mg/kg body weight/day, approximately 900 mg/day for adults, as stated by Praxis Medical Insights 1
- Clinical therapeutic doses of nicotinic acid, a NAD+ precursor, for hypercholesterolemia treatment are 3 g/day, though this is for oral administration, as reported by Praxis Medical Insights 1
Critical Gaps in Evidence
- None of the guideline documents, including those from Pediatrics and Reviews in Endocrine and Metabolic Disorders, address direct NAD+ intramuscular administration 2, 3, 4, 5, 6, 7, 8, 1
- NAD+ is a large, charged molecule that may have poor bioavailability and stability when injected intramuscularly, according to Praxis Medical Insights 1
Important Clinical Caveats
- Nicotinic acid forms can cause significant vasodilation at doses as low as 30 mg/day, resulting in a flushing risk, as stated by Praxis Medical Insights 1
- NAD+ precursors may cause nausea, vomiting, and diarrhea, according to Praxis Medical Insights 1
- Oral NAD+ precursor supplementation is the only evidence-based approach, with established safety profiles and dosing guidelines, as reported by Praxis Medical Insights 1