NMN supplement listings on Amazon
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NMN / NR Dose Calculator
Choose NMN or NR to compare common amounts used in human trials. These NAD+ precursors are not weight-based, and long-term evidence remains limited.
How to read your result
- Start with Your dose and How to split; this is a comparison point, not a prescription.
- Check the Evidence range / upper limit and safety cautions.
- Weight, age and sex are not dose inputs unless the result explicitly says they are.
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Your dose
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How to split
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Evidence range / upper limit
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Evidence grade C
Medication & safety cautions
- Long-term human safety data are limited.
- If you have active cancer or a history of cancer, ask your oncologist or doctor before considering a NAD+ precursor.
How this estimate works
NMN goal: 500 mg once each morning; human NMN trials have commonly used 250–900 mg/day, and the 2023 dose-ranging study found the largest NAD+ increase in the 600 mg and 900 mg groups. NR goal: 300 mg once each morning; trials have used 300–1,000 mg/day. These doses raise NAD+ markers in some studies; that does not establish longer life or a personal benefit.
Key studies
- Yoshino et al. 2021 — Science · NMN trial in prediabetic women
- Yi et al. 2023 — GeroScience · dose-dependent NMN trial
- Martens et al. 2018 — Nature Communications · NR tolerability and NAD+ levels
NMN buying guide · Intervention evidence
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Frequently asked questions
Is this dose based on body weight?
No. The NMN and NR amounts shown are fixed daily amounts from human studies, not weight-based recommendations.
Why does the calculator show a range?
Human trials have tested different amounts. A trial dose is not proof of a longevity benefit or a personal target.
Should I take NMN or NR while pregnant?
Pregnancy and breastfeeding safety data are not established. The calculator does not provide a dose for these situations.
Educational tool, not medical advice. Check with your doctor, especially if you take medication.