Free Tool

NAD+ & NMN Dosage Calculator

Answer 6 quick questions about your age, weight, lifestyle, and goals — and get a personalised daily dose recommendation with tips to maximise your results.

⚕️ For informational purposes only. Not medical advice. Consult your doctor before starting any supplement.

Step 1 of 6 — Age0%

How old are you?

NAD+ levels decline with age — your age is the biggest factor in determining optimal dose.

Frequently Asked Questions

How does this calculator work?+
The calculator uses a weight-based dosing model (mg per kg of body mass) as a starting point, then adjusts upward or downward based on your age group, activity level, dietary quality, and primary goal. This mirrors the approach used in human clinical trials — most of which dosed between 250 mg and 900 mg/day.
What is a typical NMN dosage?+
Clinical studies have used doses ranging from 250 mg to 1,200 mg per day. For most adults, 250–500 mg/day is a common starting point. Higher doses (500–900 mg) are often used by very active individuals or those over 50. The calculator takes your individual profile into account rather than using a one-size-fits-all number.
Does age affect how much NMN I should take?+
Yes. NAD+ levels decline by roughly 50% between age 20 and 50. Older adults typically benefit from higher doses to compensate for this natural decline. The calculator increases the recommendation for those over 40 and adjusts further for those over 60.
Should I take NMN or direct NAD+?+
Both can raise intracellular NAD+ levels. NMN is one enzymatic step from NAD+ and has strong bioavailability evidence (the Slc12a8 transporter). Direct NAD+ supplements have debated oral bioavailability but are gaining traction, especially in liposomal form. The calculator recommends the most suitable form based on your goals.
When is the best time to take NMN?+
Most research suggests taking NMN in the morning with or without food. NAD+ is a key driver of daytime cellular energy processes, so morning dosing aligns with your natural circadian rhythm. Some people split their dose (morning and midday) at higher amounts.
Can I take NMN and NR together?+
There is no known harm in combining them, but they work through similar pathways — so the added benefit is likely marginal versus doubling cost. If budget allows, a stack of NMN + TMG (Trimethylglycine) is generally more cost-effective than NMN + NR.
Is this tool suitable for South Africans?+
Yes. The product recommendations are specific to brands available in South Africa (Charava, Genologix, OneLife, Biogen, etc.) and pricing is in Rands. Dosage science itself is universal — we simply apply it to locally available products.
Is this medical advice?+
No. This tool is a general guide based on published research and is intended for informational purposes only. It does not account for your individual medical history, medications, or health conditions. Always consult a qualified healthcare professional before starting any new supplement — especially if you are pregnant, breastfeeding, or managing a chronic condition.
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Medical Disclaimer

The NAD+ & NMN Dosage Calculator is provided for informational and educational purposes only. Results are based on general research guidelines and should not be interpreted as personalised medical advice. NAD+ and NMN supplements have not been evaluated by the South African Health Products Regulatory Authority (SAHPRA) for the treatment or prevention of any disease. Individual responses to supplementation vary. Always consult a registered healthcare professional before beginning any supplement regimen, particularly if you are pregnant, breastfeeding, on chronic medication, or managing a medical condition.