NMN / NR — NAD⁺ precursors

Story

Connected to · 4

regulates · 1

Hallmarks of Aging
NAD+ carries hydrogen throughout the cell's energy production, and it is also used up every time enzymes called sirtuins do their work, and those enzymes help maintain the chemical marks that switch genes on and off. As NAD+ falls with age, energy production and the upkeep of those gene switches may both get harder. NMN and NR are its precursors; in people, what has been seen so far is mainly changes in blood markers.

contrast · 3

Niacin
NMN, NR, niacin and nicotinamide all belong to the vitamin B3 family and all feed NAD⁺ synthesis in the cell. NMN and NR are sold as new anti-aging products; niacin and nicotinamide are cheap old vitamins. In human trials NMN and NR did raise NAD⁺ in the blood (Martens 2018, Yoshino 2021), but whether that brings any health benefit has not been shown.
Urolithin A
NMN and NR top up the supply of the coenzyme NAD+; urolithin A takes a different route, dismantling damaged mitochondria through mitophagy. The two anti-aging routes are not the same thing; urolithin A's first human trial had safety as its primary endpoint and found molecular signals related to mitochondria.
α-GPC + CDP-choline
Both sit on the brain-boosting, anti-aging shelf, but their evidence is not on the same level: the cholines (such as citicoline) have a signal from small trials in vascular cognitive impairment after stroke, while NAD+ precursors in people have not gone beyond changes in blood markers.

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NAD⁺ and the raw materials for it

EVIDENCEREVIEW 1 · RCT 2 · MECH 2

READ THE ORIGINAL

and are two raw materials the body uses to make , and in recent years they have been sold as anti-aging supplements. NAD⁺ is one of the busiest molecules in the cell: it picks up electrons released by metabolism and carries them into the mitochondria to make energy (see Niacin). It also has a second job as a raw material that a group of enzymes cuts apart and uses up, so a fresh batch has to be made.

In mice and in some human tissues, NAD⁺ falls with age, and that is where this business starts. The body refills it mainly through a recycling line: it picks up the leftover nicotinamide and, by way of nicotinamide mononucleotide (NMN), builds it back into NAD⁺. Nicotinamide riboside (NR) sits one step before NMN. Taking NMN or NR means adding feedstock to that recycling line.

The niacin, NR, and NMN sold on the shelf all end up in the same NAD⁺ pool, yet their prices differ a lot.

Educational content, not medical advice — consult a clinician.

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NMN / NR — NAD⁺ precursors

Story

Connected to · 4

regulates · 1

Hallmarks of Aging
NAD+ carries hydrogen throughout the cell's energy production, and it is also used up every time enzymes called sirtuins do their work, and those enzymes help maintain the chemical marks that switch genes on and off. As NAD+ falls with age, energy production and the upkeep of those gene switches may both get harder. NMN and NR are its precursors; in people, what has been seen so far is mainly changes in blood markers.

contrast · 3

Niacin
NMN, NR, niacin and nicotinamide all belong to the vitamin B3 family and all feed NAD⁺ synthesis in the cell. NMN and NR are sold as new anti-aging products; niacin and nicotinamide are cheap old vitamins. In human trials NMN and NR did raise NAD⁺ in the blood (Martens 2018, Yoshino 2021), but whether that brings any health benefit has not been shown.
Urolithin A
NMN and NR top up the supply of the coenzyme NAD+; urolithin A takes a different route, dismantling damaged mitochondria through mitophagy. The two anti-aging routes are not the same thing; urolithin A's first human trial had safety as its primary endpoint and found molecular signals related to mitochondria.
α-GPC + CDP-choline
Both sit on the brain-boosting, anti-aging shelf, but their evidence is not on the same level: the cholines (such as citicoline) have a signal from small trials in vascular cognitive impairment after stroke, while NAD+ precursors in people have not gone beyond changes in blood markers.

Read full story

Stop 1/5

NAD⁺ and the raw materials for it

EVIDENCEREVIEW 1 · RCT 2 · MECH 2

READ THE ORIGINAL

and are two raw materials the body uses to make , and in recent years they have been sold as anti-aging supplements. NAD⁺ is one of the busiest molecules in the cell: it picks up electrons released by metabolism and carries them into the mitochondria to make energy (see Niacin). It also has a second job as a raw material that a group of enzymes cuts apart and uses up, so a fresh batch has to be made.

In mice and in some human tissues, NAD⁺ falls with age, and that is where this business starts. The body refills it mainly through a recycling line: it picks up the leftover nicotinamide and, by way of nicotinamide mononucleotide (NMN), builds it back into NAD⁺. Nicotinamide riboside (NR) sits one step before NMN. Taking NMN or NR means adding feedstock to that recycling line.

The niacin, NR, and NMN sold on the shelf all end up in the same NAD⁺ pool, yet their prices differ a lot.

Educational content, not medical advice — consult a clinician.