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Anti-Aging & Longevity

NAD+

Also called NAD, NAD plus, nicotinamide adenine dinucleotide

NAD+ isn't a peptide - it's a coenzyme every cell uses to turn food into energy, and it also fuels the repair crews that keep your cells young.

Where this answer comes fromSmall human studies

Studied in people, in small numbers. The ranges below lean mostly on community-reported dosing and results — what people run, and what they say happened.

The quick answer

NAD+ isn't a peptide - it's a coenzyme every cell uses to turn food into energy, and it also fuels the repair crews that keep your cells young. The catch is that your levels fall steadily from your 40s onward, which is the whole reason for topping it up. Injecting skips the digestive breakdown that limits pills.

Injected NAD+ is a gradual builder, not an instant hit - most people feel steadier energy and sharper focus over the first couple of weeks. Mornings are the usual timing, since it can feel a little activating. The one quirk to know: injecting it can sting for a few minutes, so go slow and rotate your sites.

Why people use it

⚡ Clean, steady energy; 🧠 Sharper focus and clarity; ⏳ Supports healthy aging and DNA repair; 🔄 Faster recovery; 🌅 A whole-body "reset"

What people report using

These are ranges other people have reported running. They are here so you can see what has actually been done — they are not medical advice and not a recommendation for you.

People report running this anywhere from 50mg to 100mg, mon / wed / fri, morning.Where somebody sits in that range depends on what they are using it for and what they are starting from — the low end is a deliberate choice a lot of people make, not a half-hearted version of the high end.

Standard — 50mg, three times a week50mg

Energy

How often
Mon / Wed / Fri, morning
Route
subcutaneous
Where this comes from
Small human studies

Steadier energy and clearer thinking through the day.

More — 100mg, three times a week100mg

Energy

How often
Mon / Wed / Fri, morning
Route
subcutaneous
Where this comes from
Small human studies

Used by people who felt the standard dose working and wanted more of it.

Standard — 50mg, three times a week50mg

Longevity & anti-aging

How often
Mon / Wed / Fri, morning
Route
subcutaneous
Where this comes from
Small human studies

Steadier energy and clearer thinking through the day.

Reconstitute to 100 mg/ml (1000mg vial + 10ml bacteriostatic water). 25mg = 25u (0.25ml), 50mg = 50u, 100mg = 100u. Two or three times a week (Monday, Wednesday, Friday), AM. Start low and titrate.

Work out your own units on the reconstitution calculator — the most common serious mistake in this area is arithmetic, not chemistry.

What to expect, and when

First thing people notice
Day 1 for about half of people
When it gets real
Weeks 2–3 (steady cognition)
Where it peaks
Month 1 (full baseline)
Patience needed
Low - fast responder
The bit people get wrong

💡 NAD+ splits people, and it's better to know that going in. Some feel a lift within hours of the first injection. Close to half report little or nothing - and that split doesn't track the amount you take, it appears to track how depleted you were to begin with. Both responses are ordinary. If you land in the second group, going higher rarely changes it, and that's useful information rather than a failure.

Side effects, and what people do about them

Here's the one tip that makes all the difference: inject it slowly. Taken slow, most people are fine. Rushed, it can bring a brief flush - warmth through the face and chest, sometimes a tight feeling - that eases within a few minutes once you slow the push down. The shot itself can sting a little. Go gentle and it's a smooth ride. One thing worth keeping separate: a flush that arrives with the injection and fades with it is the ordinary thing and it's controllable. Chest pain that doesn't settle is a different question, and that one is worth getting looked at rather than waiting out.

Go deeper

Open these only if you want them.

How it actually works

Not a peptide - a coenzyme, and the distinction changes how to think about it. Nicotinamide adenine dinucleotide is the electron carrier every cell uses to turn food into usable energy, and it is also the required substrate for sirtuins and PARP enzymes, the repair machinery whose activity falls as levels decline with age.

Because it is a substrate rather than a receptor ligand, there is nothing for anything else to compete with it for. Its ceiling is set by how much a cell can take up and use, not by receptor saturation, which is a different kind of limit and the reason more is not straightforwardly better.

What people report, in full

NAD+ has a loyal following for clean energy and mental clarity. About half to sixty percent report a genuine lift, and how much you feel tends to track with how depleted you were to begin with - people coming from a low, run-down baseline notice it most. It's usually framed as an anti-aging and cellular-recovery tool, and people often pair it with other mitochondrial supports. The subcutaneous route makes it easy to run at home on a steady 2–3× weekly rhythm.

Worth knowing

The human testing was for a different purpose than people use it for here

The trials are real. They were not asking the question most people are asking when they come looking for this one.

Sources and review

What people report

This record is built on what the wider community reports doing and experiencing, summarised above. No counted dataset has been attached to this compound yet — when one is published, it goes here with its numbers.

References

Martens CR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nat Commun 2018;9:1286.

Yoshino M, et al. Nicotinamide mononucleotide increases muscle insulin sensitivity in prediabetic women. Science 2021;372:1224. PMID 33888596.

These references were located by literature search and recorded as the primary sources behind this record. The publishers block automated retrieval, so they are pointers to the right papers rather than quotations we have checked line by line. They are replaced as we read them properly.

Last reviewed 2026-09-06.

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