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5-Amino-1MQ

An experimental NNMT inhibitor — a pathway studied for its role in energy metabolism, body composition and nutrient utilisation.

Why this molecule?

Why block an enzyme rather than mimic a hormone? 5-Amino-1MQ follows a different biological approach: target NNMT, an enzyme of cellular metabolism, and observe what happens to energy reserves.

Metabolism & cellular energy ~9 min readAlso known as5-amino-1-méthylquinolinium5A1MQNNMTi
  • Research Use Only
  • Molecule under study
  • Living document
Research state
Current research state
Preclinical research. The molecule is described as an inhibitor of nicotinamide N-methyltransferase (NNMT), studied in vitro and in animal models. No published human interventional clinical trial as of the update date of this sheet.
Current clinical phase
Preclinical — no published human clinical phase
Last update
23 août 2026 · Fiche v1.0
Living document
Updated regularly as research progresses.
01 · Reference points

What is 5-Amino-1MQ?

5-Amino-1MQ is a small synthetic molecule, very different from peptides: it is neither a hormone nor a hormonal analogue, but a chemical compound designed to block the activity of a specific enzyme.

This enzyme is called NNMT — nicotinamide N-methyltransferase. It is involved in how the cell uses nicotinamide (a form of vitamin B3) and in certain reactions known as methylation.

The molecule is studied in the field of energy metabolism and adipose tissue, mainly in the laboratory and in animals. It is presented here for educational and reference purposes (Research Use Only).

02 · Reference points

Names you may come across

5-Amino-1MQ is not a peptide and has no nickname inherited from another molecule. You will mainly encounter its abbreviated name, its full chemical name and the generic term “NNMTi”, which covers all NNMT inhibitors.

5-Amino-1MQ

The most common name, including in the publications describing NNMT inhibition.

5-amino-1-méthylquinolinium

The full chemical name of the cation. Laboratory-grade forms are generally salts (for example the iodide).

5A1MQ

An abbreviation used in some recent publications.

NNMTi

A generic term meaning “NNMT inhibitor”. It designates a family of compounds, not only 5-Amino-1MQ.

03 · Made simple

Understanding it simply

Understand it in 30 seconds: three ideas are enough, with no jargon.

1

An enzyme, not a receptor

Most metabolism-related molecules people talk about act on hormone receptors. 5-Amino-1MQ instead targets an enzyme inside the cell: NNMT. That is a completely different entry point.

2

A question of cellular accounting

NNMT consumes nicotinamide and methyl groups. Slowing this enzyme changes how the cell allocates these resources — that is what research is trying to understand.

3

It is not an appetite suppressant

5-Amino-1MQ does not act like a GLP-1 or a satiety hormone. Its scientific interest lies on the side of energy metabolism, nicotinamide, methylation reactions and lipid metabolism.

04 · Scientific honesty

What research shows today

Science advances step by step. We clearly distinguish what is firmly established from what remains under study.

État actuel des connaissances
  • 5-Amino-1MQ is described in the literature as a selective, membrane-permeable inhibitor of NNMT. — établi
  • NNMT methylates nicotinamide into 1-methylnicotinamide while consuming S-adenosylmethionine (SAM). — établi
  • Mouse models of diet-induced obesity report reduced fat mass under NNMT inhibition. — établi
  • Transposing these observations to humans is not established: no published clinical trial. — en cours
  • Consequences of prolonged NNMT inhibition on the various human tissues: unknown. — en cours
  • Dose-response relationship, long-term safety and any therapeutic relevance: to be studied. — en cours

A well-described biochemical mechanism and genuine preclinical data (cells, mice). However, no published human clinical data currently allows efficacy or safety in humans to be assessed.

Level of evidence, step by step

  • Biochemical mechanism4/4

    The reaction catalysed by NNMT and its inhibition by 5-Amino-1MQ are described in the biochemical literature.

  • Cell (in vitro)3/4

    Work on adipocytes and cellular systems: documented effects on enzymatic activity and cellular metabolism.

  • Animal (in vivo)2/4

    Mouse models of diet-induced obesity: reduced fat mass and changes in body composition reported.

  • Human (clinical)?

    No published interventional clinical trial allowing efficacy and safety to be assessed in humans.

What the research shows

  • 5-Amino-1MQ is described as a selective NNMT inhibitor able to cross cell membranes (Neelakantan et al., Biochemical Pharmacology, 2018).
  • NNMT transfers a methyl group from SAM to nicotinamide, producing 1-methylnicotinamide and SAH: this reaction is thoroughly documented in biochemistry.
  • In mouse models of high-fat diet-induced obesity, NNMT inhibition has been associated with reduced fat mass and adipocyte size.
  • Later work studied NNMT inhibition on body composition and metabolic parameters in animals (Neelakantan et al., 2024).
  • NNMT is studied well beyond adipose tissue: ageing, muscle, fibrosis, inflammation and oncology are among the published research areas for this enzyme.

What still remains to be studied

  • Actual efficacy in humans: no published interventional clinical trial data allows it to be assessed.
  • Human safety, particularly during prolonged inhibition of an enzyme expressed in several tissues.
  • Clinical dose-response relationship: entirely unknown in humans.
  • Actual effect on NAD-related fluxes in humans: a mechanistic hypothesis, not clinically demonstrated.
  • Consequences of a lasting change in the SAM/SAH ratio on methylation reactions.
  • Any place in a therapeutic strategy: an entirely open question.
05 · Three reading levels

What we know today

Not all information carries the same weight of evidence. We therefore present it across three clearly distinct levels, from the most solid to the most indicative.

What scientific publications show

Scientific evidence
  • Publications describe the mechanism of NNMT inhibition and report, in animal models, changes in fat mass and body composition.
  • In vitro work concerns adipocytes, NNMT enzymatic activity and cellular metabolism.
  • To date, the published clinical literature contains no human interventional trial allowing efficacy and safety to be assessed.

What some professionals report

Documented
  • The authors of the preclinical work stress that results obtained in mice do not predict an equivalent effect in humans.
  • The caution expressed in the literature concerns in particular the systemic inhibition of an enzyme with multiple physiological functions.

What the community reports

Field observations
  • Metabolic optimisation communities report, anecdotally, impressions of energy, of finding it easier to sustain activity, or of body recomposition.
  • These reports are individual testimonies, without objective measurement, without a comparator and without structured follow-up.

Community observations are not evidence: they are neither controlled, nor measured, nor reproducible. They are reported here solely to describe the information landscape honestly.

06 · The mechanism

How does 5-Amino-1MQ work?

The logic is enzymatic, not hormonal. It reads from top to bottom: the molecule inhibits an enzyme, which changes certain metabolic fluxes, from which the studied effects follow.

Molécule

5-Amino-1MQ

Target enzyme and substrates
NNMTNicotinamide N-methyltransferase
NicotinamideSubstrate methylated by the enzyme
SAMMethyl group donor
1-MNA + SAHProducts of the reaction
Change in certain metabolic fluxes

Less nicotinamide consumed by NNMT and less SAM used: the SAM/SAH ratio and nicotinamide availability are modified, which influences certain cellular metabolic balances.

Physiological effects studied
  • Tissu adipeux

    Changes in adipocyte size and fat mass observed in animal models.

  • Dépense énergétique

    Energy parameters studied in mice, not directly transposable to humans.

  • Métabolisme lipidique

    Use of lipid substrates studied in vitro and in vivo in animals.

The reading is hierarchical: the molecule binds to receptors, which triggers signalling; the physiological effects listed at the bottom are downstream consequences, not receptors.

None of these effects is demonstrated in humans. The last level of the diagram describes what research observes in experimental models, never a result expected in a person.

6A · Going further

Going deeper: structure and pharmacology

For readers who wish to understand the underlying biochemistry: the enzyme, the “methyl sink” concept, the nuanced link with NAD and the distinction between weight and body composition.

Molecule identity

Common name
5-Amino-1MQ
Chemical name (cation)
5-amino-1-methylquinolin-1-ium
Common laboratory form
Iodide salt — 5-amino-1-methylquinolinium iodide
CAS (iodide salt)
42464-96-0
Formula (iodide salt)
C10H11IN2
Formula (cation)
C10H11N2+
Molar mass (iodide salt)
≈ 286.1 g/mol
Compound type
Small synthetic molecule (quaternary quinolinium) — it is not a peptide
Main target
NNMT — nicotinamide N-methyltransferase
Status
Research compound — Research Use Only, not approved as a medicine
NNMT: the enzyme at the heart of the story

NNMT stands for nicotinamide N-methyltransferase. It transfers a methyl group from S-adenosylmethionine (SAM) to nicotinamide, producing 1-methylnicotinamide (1-MNA) and S-adenosylhomocysteine (SAH). Summarised reaction: nicotinamide + SAM → NNMT → 1-MNA + SAH. It is expressed notably in the liver and adipose tissue, and its expression level varies with tissue and metabolic context.

Why NNMT interests metabolic research

Several avenues are being explored: nicotinamide utilisation, the size of the SAM pool, cellular methylation capacity, energy metabolism, lipid storage and adipocyte function. These are working hypotheses supported by preclinical data — they are not clinically established mechanisms in humans.

NNMT, nicotinamide and NAD+ — a nuanced reading

Nicotinamide can feed the NAD+ salvage pathways. Since NNMT consumes nicotinamide, its activity may theoretically influence certain balances linked to NAD metabolism. An honest formulation: NNMT inhibition is studied for its potential effects on nicotinamide availability and certain NAD-related fluxes. It would be wrong to write that 5-Amino-1MQ “increases NAD+ in humans”: no human study demonstrates this.

The “methyl sink”: SAM, SAH and methylation

High NNMT activity consumes SAM and produces SAH, which can lower the SAM/SAH ratio — a classic indicator of cellular methylation capacity. Less available SAM can modify certain methylation reactions; inhibiting NNMT can shift this balance the other way. This is a studied mechanism described in the literature, not a guaranteed clinical benefit.

Why fat mass rather than weight

Body weight adds up fat, muscle, water, glycogen and digestive content. Body composition describes how these compartments are distributed. Research on 5-Amino-1MQ is more concerned with adipose tissue, adipocyte size and energy metabolism than with the number on a scale — that is what makes the pathway intellectually interesting, without promising any result.

What preclinical research shows

In vitro: inhibitory activity on NNMT, work on adipocytes and cellular metabolism. In vivo: in mouse models of high-fat diet-induced obesity, studies report reduced fat mass, smaller adipocytes and changes in metabolic parameters, with tolerability described within the experimental conditions of those studies. These observations hold for the animal model studied, under the conditions of the study.

And in humans?

To date, data allowing the efficacy and safety of 5-Amino-1MQ to be directly assessed in humans are absent from the published clinical literature. This limitation is not a detail: it is the most important piece of information for situating the level of evidence. Any claim of human efficacy would be extrapolation.

NNMT is not a “bad enzyme”

NNMT fulfils physiological functions and its expression varies with tissue, metabolic context, nutritional state and certain diseases. Reducing the question to “NNMT = bad, inhibitor = good” would be a caricature. The scientific interest lies in the fine modulation of a biological pathway, with all the uncertainty that entails.

Other research avenues around NNMT

NNMT is also studied in ageing, metabolism, fibrosis, inflammation, adiposity and oncology. This in no way means that 5-Amino-1MQ treats these situations: this work concerns the enzyme and experimental models, not human use of this compound.

Safety: a large zone of uncertainty

There are no robust human data; preclinical data remain limited. Systemic inhibition of NNMT could theoretically concern several tissues, and human safety cannot be deduced from mouse models. This sheet provides neither a course of action nor management of adverse effects: those questions fall to a qualified healthcare professional.

Sport and metabolic optimisation: what can be said

The theoretical interest concerns body composition, metabolic efficiency, energy utilisation and lipid metabolism, with an approach that is not directly appetite-suppressing. But preclinical data do not allow any conclusion of a demonstrated improvement in human athletic performance. No published study establishes this.

What is reported in biohacking circles

The molecule became popular in some metabolic optimisation communities precisely because it targets an enzyme rather than a classic satiety receptor. The themes reported — a feeling of energy, finding it easier to sustain activity, interest in recomposition, a perception of reduced fat mass — are testimonies and anecdotal observations that are not clinically validated. Complementary metabolic approaches (metabolic agonists, NAD-oriented strategies, mitochondrial molecules, body-composition strategies) are sometimes mentioned in those discussions. The existence of community discussions about combinations is neither scientific validation nor a recommendation to use. No protocol, no combination and no dosage is provided here.

6B · Telling the sources apart

Compare: clinical setting versus outside the clinical setting

5-Amino-1MQ is frequently placed alongside molecules of the GLP-1 family. That comparison is misleading: the two approaches share neither the target, nor the chemical nature, nor the level of evidence.

5-Amino-1MQ
GLP-1 / incretins
Target

NNMT — an intracellular enzyme.

Hormone receptors (GLP-1, GIP…).

Type of molecule

A small experimental synthetic molecule.

Peptides, agonists of hormone receptors.

Satiety

This is not the main mechanism described.

Central axis of the mechanism of action.

Adipose tissue

Direct preclinical interest in the adipocyte.

Effects on adipose tissue most often secondary to the hormonal axes.

Human data

Absent from the published clinical literature to date.

A developed clinical body of work, including phase 3 trials.

Neither approach is presented as superior: they follow different scientific logics and sit at very different levels of evidence.

07 · Le parcours scientifique

Timeline des essais cliniques

A molecule under study progresses step by step. Here, simply, is where the research currently stands.

DécouvertePrécliniquePhase IPhase IIPhase IIIRéglementaire
  1. Discovery· 2014Completed

    NNMT identified as a metabolic target

    A study published in Nature reports that reducing NNMT expression in adipose tissue protects mice from diet-induced obesity.

  2. Preclinical· 2018Completed

    First membrane-permeable inhibitors

    Selective NNMT inhibitors, including 5-Amino-1MQ, are described as able to enter cells; their administration reverses high-fat diet-induced obesity in mice.

  3. Preclinical· 2019Completed

    Muscle and regeneration in aged animals

    An NNMT inhibitor is studied for its effect on senescent muscle stem cells and the regenerative capacity of aged skeletal muscle, in animals.

  4. Preclinical· 2024Completed

    Body composition and metabolic dysfunction

    Studies assess the effect of an NNMT inhibitor (5A1MQ) on body composition and parameters of obesity-related metabolic dysfunction, in animal models.

  5. Clinical· Upcoming

    No published human trial

    As of the update date of this sheet, no published human interventional clinical trial evaluates the efficacy or safety of 5-Amino-1MQ. The human level of evidence is therefore absent.

08 · La preuve documentée

Les analyses disponibles

The theory is put to the test. Here are the independent analyses already published for 5-Amino-1MQ, available in the Analyses Library.

The analyses for this molecule are currently being compiled.

Ouvrir la bibliothèque des analyses
09 · Repères

Questions fréquentes

What is 5-Amino-1MQ?

It is a small synthetic molecule studied in research for its ability to inhibit an enzyme called NNMT. It is neither a peptide nor an approved medicine: it is presented here for educational and documentary purposes (Research Use Only).

What is NNMT?

NNMT stands for nicotinamide N-methyltransferase. This enzyme transfers a methyl group from SAM (S-adenosylmethionine) to nicotinamide, producing 1-methylnicotinamide and SAH (S-adenosylhomocysteine).

Why does NNMT interest metabolic research?

Because it sits at the crossroads of several fluxes: nicotinamide utilisation, methylation capacity and energy metabolism. It is studied in particular in adipose tissue, where its expression has been linked, in animals, to the management of energy stores.

Is 5-Amino-1MQ a GLP-1?

No. GLP-1 molecules act on hormone receptors; 5-Amino-1MQ inhibits an intracellular enzyme. These are two approaches with no mechanistic relationship.

Is it an appetite suppressant?

No. Satiety is not the main mechanism described in the literature. Research interest concerns cellular metabolism, adipose tissue and nicotinamide pathways.

What do animal studies show?

In mouse models of high-fat diet-induced obesity, NNMT inhibition has been associated with reduced fat mass, smaller adipocytes and changes in metabolic parameters. These results hold for the animal model studied, under the conditions of the study.

Are there human studies?

To date, data allowing the efficacy and safety of 5-Amino-1MQ to be directly assessed in humans are absent from the published clinical literature. This is an essential limit for understanding the current level of evidence.

Why is biohacking interested in it?

Because the molecule targets an enzyme rather than a classic satiety receptor, which makes it an atypical metabolic approach. The feedback circulating is, however, anecdotal testimony, without objective measurement or clinical validation.

What is the link with NAD+?

Nicotinamide can feed the NAD+ salvage pathways. Since NNMT consumes it, inhibiting the enzyme is studied for its potential effects on nicotinamide availability and certain NAD-related fluxes. No human study demonstrates an increase in NAD+ in a person.

What is the link with methylation?

NNMT uses SAM, the cell's main methyl group donor, and produces SAH. High activity can therefore modify the SAM/SAH ratio, that is, methylation capacity. Inhibiting the enzyme shifts this balance: that is a studied mechanism, not a demonstrated benefit.

Are the effects on fat mass demonstrated in humans?

No. They are reported in animal models and cellular work. No human demonstration exists in the published clinical literature.

What remains to be studied?

Efficacy and safety in humans, the clinical dose-response relationship, effects on the various human tissues, the consequences of prolonged NNMT inhibition and any place for this pathway in a therapeutic strategy.

10 · Bibliographie

Publications scientifiques

11 · Le vocabulaire

Glossaire

NNMT
Nicotinamide N-méthyltransférase : enzyme qui ajoute un groupe méthyle au nicotinamide.
Nicotinamide
Forme de vitamine B3, impliquée notamment dans les voies de récupération du NAD.
NAD+
Molécule centrale du métabolisme énergétique cellulaire, impliquée dans de nombreuses réactions.
SAM
S-adénosylméthionine : principal donneur de groupes méthyle dans la cellule.
SAH
S-adénosylhomocystéine : produit formé lorsque la SAM cède son groupe méthyle.
1-MNA
1-méthylnicotinamide : produit de la réaction catalysée par NNMT.
Adipocyte
Cellule du tissu adipeux, spécialisée dans le stockage des lipides.
Méthylation
Ajout d'un groupe méthyle à une molécule ; réaction très fréquente dans la régulation cellulaire.
Préclinique
Étape de recherche antérieure aux essais humains : travaux en laboratoire et sur modèles animaux.
In vitro
Réalisé hors de l'organisme, sur cellules ou molécules isolées.
In vivo
Réalisé sur un organisme vivant, le plus souvent animal à ce stade de recherche.
Research Use Only
Destiné à des travaux de référence et de recherche, sans usage médical ni promesse de résultat.
L'écosystème PHL

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Fiche de référence — version 1.0, mise à jour le 23 août 2026. The complete regulatory and scientific framework is gathered in the « Information importante » en tête de fiche.