Side-by-Side Comparison · 2026

NAD+ vs SS-31

NAD+ vs SS-31 — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

NAD+
Mitochondrial & Longevity

NAD+ (Nicotinamide Adenine Dinucleotide) is a fundamental coenzyme found in every living cell, essential for over 500 enzymatic reactions including cellular energy metabolism, DNA repair, and gene expression regulation. NAD+ levels decline by approximately 50% between ages 40 and...

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SS-31
Mitochondrial

SS-31 (Elamipretide) is a synthetic aromatic-cationic tetrapeptide that concentrates in the inner mitochondrial membrane and stabilizes cardiolipin, preserving electron transport chain supercomplex assembly and ATP production. The most clinically advanced mitochondrial-targeted p...

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Key Parameters
Parameter NAD+ SS-31
Category Mitochondrial & Longevity Mitochondrial
Research Extensively Studied Extensively Studied
Half-Life ~1–2 hours (injectable) ~2–4 hours
Typical Dose 50–100 mg 1–5 mg
Frequency Daily Once daily
Route Subcutaneous / IV (clinical) Subcutaneous
FDA Status Supplement / Compounding Phase II/III

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Frequently Asked Questions
What is the difference between NAD+ and SS-31?
NAD+: NAD+ (Nicotinamide Adenine Dinucleotide) is a fundamental coenzyme found in every living cell, essential for over 500 enzymatic reactions including cellular energy metabolism, DNA repair, and gene exp... SS-31: SS-31 (Elamipretide) is a synthetic aromatic-cationic tetrapeptide that concentrates in the inner mitochondrial membrane and stabilizes cardiolipin, preserving electron transport chain supercomplex as...
Which has a longer half-life, NAD+ or SS-31?
NAD+ half-life: ~1–2 hours (injectable). SS-31 half-life: ~2–4 hours.
Can you stack NAD+ and SS-31?
NAD+ and SS-31 are sometimes used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.