NAD+ Precursor
Fuels the body's master coenzyme for energy, repair, and resilience.
Also known as: NAD+ Boosters • NR • Nicotinamide Riboside
Overview
NAD+ (Nicotinamide Adenine Dinucleotide) is a central coenzyme in all living cells, vital for metabolism and hundreds of enzymatic reactions. Its levels naturally decline with age, contributing to the aging process. NAD+ Precursors, such as Nicotinamide Riboside (NR) and Nicotinamide Mononucleotide (NMN), are molecules that the body can convert into NAD+. Supplementing with these precursors is a direct strategy to boost NAD+ levels, thereby supporting cellular function and promoting healthy aging.
Key Benefits
Restores NAD+ Levels
Directly provides the building blocks for the body to synthesize more NAD+, counteracting the age-related decline.
Supports Cellular Metabolism
As a key player in the Krebs cycle and electron transport chain, NAD+ is fundamental for converting food into cellular energy (ATP).
Promotes Cellular Repair
NAD+ is required by enzymes like PARPs, which are critical for repairing damaged DNA, helping to maintain genomic stability.
Dosage & How to Take
For Nicotinamide Riboside (NR), a common dose is 300-1000 mg per day.
| Purpose | Dose | Notes |
|---|---|---|
| General Daily Support | 300 mg/day | This is the dose often used in initial human studies and found in many commercial supplements. |
| High-Intensity Support | 500-1000 mg/day | Higher doses may provide more robust benefits and are shown to be safe in short-term studies. |
Best Time to Take
Best taken in the morning to align with the body's natural energy cycles.
With or Without Food
Can be taken with or without food.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Nicotinamide Riboside (NR) | Good. It is readily absorbed and efficiently converted to NAD+. | A well-studied and commercially available precursor. | Niagen® is a patented, well-researched form of NR. |
| Nicotinamide Mononucleotide (NMN) | Good, especially in sublingual or liposomal forms. | A more direct precursor to NAD+. | See the 'nmn-longevity' profile for more details. |
| Niacin (Vitamin B3) | High, but can cause uncomfortable flushing. | Cholesterol management, but less efficient for NAD+ boosting. | High doses are required, and the flushing side effect is a major drawback for many. |
Side Effects & Safety
Common
- NR and NMN are very well tolerated. Niacin commonly causes skin flushing, itching, and warmth.
Rare
- Mild nausea or headache can occur with any precursor, but it is uncommon.
Contraindications
- Those with liver disease should be cautious with high-dose Niacin. NR and NMN have a better safety profile.
Interactions
N/A
Scientific Research
Nicotinamide riboside is a safe and orally bioavailable NAD+ precursor
Human studies confirmed that single doses of NR (Niagen®) were safe and effectively increased NAD+ levels in a dose-dependent manner.
Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults
Longer-term supplementation with NR was found to be safe and sustainably increased NAD+ levels by up to 60%.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.