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β-Nicotinamide Adenine Dinucleotide (NAD+)

Also known as: NAD+, NAD, Nicotinamide Adenine Dinucleotide, Beta-NAD

C
Evidence

NAD+ is a coenzyme essential for cellular energy metabolism, mitochondrial function, and NAD+-dependent enzyme activity (sirtuins, PARPs). While NAD+ levels decline with age, oral supplementation has limited bioavailability; research on direct NAD+ supplementation in humans remains preliminary.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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The highest-scored β-Nicotinamide Adenine Dinucleotide (NAD+) product in our catalog (82/100). Track dose and overlaps in the app.
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Every β-Nicotinamide Adenine Dinucleotide (NAD+) product we have scored

Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.

Common questions

How much β-Nicotinamide Adenine Dinucleotide (NAD+) should I take?

The typical range is 250-500 mg daily. Long-term safety data in humans is limited; most studies are short-term (4-12 weeks)

When should I take β-Nicotinamide Adenine Dinucleotide (NAD+)?

Typically taken with meals. May improve absorption; food does not significantly impair uptake.

Which form of β-Nicotinamide Adenine Dinucleotide (NAD+) is best?

Capsule. Other forms in the catalog: Powder, Tablet.

Is β-Nicotinamide Adenine Dinucleotide (NAD+) safe?

Commonly reported: Mild nausea, Flushing (more common with high-dose niacin; less likely with NAD+ itself), Headache (rare).

Which β-Nicotinamide Adenine Dinucleotide (NAD+) supplement scores highest?

Nutricost NAD+, at 82/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.

Primary uses

  • Cellular energy production
  • Mitochondrial function support
  • Age-related NAD+ decline
  • Sirtuin activation

How it works

  • Serves as electron acceptor in glycolysis, citric acid cycle, and electron transport chain
  • Substrate for NAD+-dependent enzymes (sirtuins, PARP, CD38)
  • Supports ATP production and redox balance

Dosage

Typical range
250-500 mg daily
Timing
Typically taken with meals
With food
May improve absorption; food does not significantly impair uptake
Duration
Long-term safety data in humans is limited; most studies are short-term (4-12 weeks)
Special populations
Safety in pregnancy, lactation, and children not established; use with caution in liver or kidney disease

Forms

  • Capsule· 70/100
  • Powder· 70/100
  • Tablet· 70/100

Safety

Common side effects

  • Mild nausea
  • Flushing (more common with high-dose niacin; less likely with NAD+ itself)
  • Headache (rare)

Contraindications

  • Active gout or hyperuricemia (theoretical risk from purine metabolism)
  • Severe liver disease
  • Uncontrolled hypertension

Products containing β-Nicotinamide Adenine Dinucleotide (NAD+)

Top-scoring supplements in our catalog that list β-Nicotinamide Adenine Dinucleotide (NAD+) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

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Evidence notes

Strong mechanistic rationale and animal data support NAD+ biology, but human RCT evidence for oral NAD+ supplementation is limited and inconsistent. Bioavailability concerns exist due to molecular size and intestinal degradation. Preclinical evidence is robust; clinical translation remains preliminary.

Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.

β-Nicotinamide Adenine Dinucleotide (NAD+) compared head-to-head

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.