5-Amino-1MQ.

FTier · 15/100Research / preclinicalLongevity

5-Amino-1MQ (5-amino-1-methylquinolinium) is a small-molecule, substrate-site inhibitor of the enzyme nicotinamide N-methyltransferase (NNMT).

Quick answer

5-Amino-1MQ (5-amino-1-methylquinolinium) is a small-molecule, substrate-site inhibitor of the enzyme nicotinamide N-methyltransferase (NNMT). 5-Amino-1MQ is research / preclinical, and PepCue grades its published evidence F tier (15/100). This is a research reference, not medical or dosing advice.

What it is

5-Amino-1MQ (5-amino-1-methylquinolinium) is a small-molecule, substrate-site inhibitor of the enzyme nicotinamide N-methyltransferase (NNMT). Despite being grouped with "peptides" in the research-chemical marketplace, it is not a peptide at all but a methylquinolinium heterocyclic salt that emerged from academic medicinal-chemistry work at the University of Texas aimed at producing membrane-permeable NNMT inhibitors. It is an investigational research compound, not an approved drug.

02

How it works

NNMT is a cytosolic enzyme that transfers a methyl group from S-adenosylmethionine (SAM) to nicotinamide, generating 1-methylnicotinamide (1-MNA) and S-adenosylhomocysteine (SAH). Because nicotinamide is the precursor for NAD+ salvage, high NNMT activity in adipose tissue is thought to drain nicotinamide away from NAD+ synthesis and consume SAM. By occupying the nicotinamide substrate site, 5-Amino-1MQ lowers cellular 1-MNA and is proposed to spare nicotinamide for NAD+ regeneration and free up SAM-cycle methylation capacity. The downstream hypothesis (elevated NAD+ activating sirtuins/AMPK to favor energy expenditure over lipid storage) is mechanistically plausible but is largely inferred from cell and rodent work rather than directly demonstrated in humans.

03

Mechanism pathways

Adipose tissue and lipolysis signalling

Acting directly on fat tissue to increase fat breakdown or reduce its blood supply.

This pathway groups compounds that act on adipose tissue itself rather than on appetite. Lipolysis is the enzymatic breakdown of stored triglycerides into free fatty acids and glycerol, executed by adipose triglyceride lipase and hormone-sensitive lipase inside the fat cell. It is normally triggered by catecholamines acting on beta-adrenergic receptors, which raise cyclic AMP and activate protein kinase A. Growth hormone also stimulates lipolysis, but it does so as part of a package that includes growth promotion and a rise in insulin resistance. Several compounds here derive from the observation that growth hormone's fat-mobilising activity appears to reside in the carboxy-terminal region of the molecule, separate from the domain that binds and activates the growth hormone receptor. Isolating that region was intended to produce fat breakdown without raising IGF-1 or impairing glucose handling. Mechanistic work in rodents linked the effect to beta-3 adrenergic receptor activity rather than to growth hormone receptor signalling. One member of this group is the plain fragment; another is a modified analog with an added amino-terminal residue and considerably more development history behind it. A second, entirely different approach targets the blood supply instead of the fat cell. A homing sequence binds prohibitin, a protein unusually abundant on the endothelial cells lining blood vessels within white adipose tissue, and delivers a pro-apoptotic sequence that kills those cells once internalised. The intent is to shrink fat depots by starving them of perfusion. This is a vascular-targeting strategy borrowed from oncology and is conceptually unrelated to lipolysis. A third approach targets an enzyme, nicotinamide N-methyltransferase, which is highly expressed in adipose tissue and consumes both nicotinamide and methyl groups from S-adenosylmethionine. Inhibiting it is proposed to spare nicotinamide for NAD+ regeneration and to shift adipocytes toward energy expenditure rather than storage. Clinical relevance across this group is weak. The growth hormone fragment analog was carried into human obesity trials and did not produce clinically meaningful weight loss beyond placebo, and it was not approved as a medicine. The plain fragment has essentially no human evidence of its own and borrows its reputation from that analog. The vascular-targeting compound raised kidney toxicity concerns in primate work and did not progress. The enzyme inhibitor's downstream logic is plausible but largely inferred from animal and cell studies. None of these are approved for any use.

Senescence and cellular ageing pathways

Targeting senescent cells, telomere maintenance, and NAD+ availability.

Cellular senescence is a state in which a damaged cell permanently stops dividing but does not die. Senescent cells accumulate with age and secrete a mix of inflammatory cytokines, proteases, and growth factors collectively called the senescence-associated secretory phenotype, which is thought to drive chronic low-grade inflammation in surrounding tissue. Clearing these cells in animal models has been associated with improvements in several age-related measures, which is the entire premise behind senolytic compounds. One compound here exploits a specific vulnerability. In senescent cells the transcription factor FOXO4 accumulates and binds the tumour suppressor p53, holding it in the nucleus and preventing it from triggering apoptosis. That interaction is what keeps a damaged cell alive when it should have died. A retro-inverso peptide designed to disrupt the FOXO4 and p53 interface frees p53 to initiate intrinsic apoptotic signalling. Because healthy cells do not depend on this interaction for survival, the effect is proposed to be selective for senescent cells. A second approach targets telomere maintenance. Telomeres shorten with each cell division until a cell reaches its replicative limit, and telomerase is the enzyme that can extend them. A short peptide in this group has been reported in cultured human cells to induce telomerase expression and extend the number of divisions past that limit, with a secondary proposed action on pineal function and melatonin output. A third targets NAD+ availability by inhibiting the enzyme that methylates nicotinamide and diverts it away from NAD+ salvage. NAD+ is a substrate for sirtuins and a central currency of cellular energy metabolism, and its decline with age is a well-described observation. Honesty about this pathway is essential. Senescence biology is real and actively researched, and the molecular interactions described above have been characterised in cells and rodents. What is missing is human evidence. There are no controlled clinical trials demonstrating that any of these compounds slow ageing, extend healthy lifespan, or improve any clinical outcome in people. Deliberately inducing apoptosis or manipulating telomerase activity also carries theoretical risks that have not been characterised in humans, since telomerase reactivation is a feature of many cancers. None of these compounds is approved anywhere, and all are sold as unregulated research material.

04

The evidence

The core evidence is preclinical. Neelakantan et al. (Biochemical Pharmacology, 2018) reported that methylquinolinium NNMT inhibitors including 5-Amino-1MQ were membrane-permeable, relatively selective, lowered intracellular 1-MNA, and reduced lipogenesis in 3T3-L1 adipocytes; in diet-induced obese mice on a high-fat diet, systemic NNMT-inhibitor treatment significantly reduced body weight, white adipose mass, and adipocyte size and lowered plasma total cholesterol without changing food intake or producing observable adverse effects. Supporting context comes from Ehebauer et al. (Life Sciences, 2020) on glucose-dependent NNMT regulation in adipocytes, and Dimet-Wiley et al. (Scientific Reports, 2022) combining NNMT inhibition with calorie restriction in obese mice. There are no published human clinical trials, and no human pharmacokinetic or efficacy data for 5-Amino-1MQ have been reported. The human-vs-animal gap here is large and should not be glossed over.

05

The evidence, in brief

A small-molecule NNMT inhibitor investigated for adipocyte metabolism and obesity. The evidence is preclinical: NNMT inhibitors reduced bodyweight and fat mass in diet-induced obese mice, with no human clinical trials reported.

  1. Membrane-permeable NNMT inhibitors reverse high-fat-diet-induced obesity in miceBiochem Pharmacol, 2018 (PMID 29155147)
06

Evidence maturity

An evidence-only reading: approval status, human vs preclinical data, mechanism and safety. Popularity never raises it. Research file #001

Minimal1.2/5 composite

Little indexed evidence or largely speculative.

Human evidence0/5
Preclinical depth2/5
Mechanism3/5
Safety clarity0/5
Regulatory1/5
Practical relevance1/5
Where it sits on the evidence ladder
AnecdoteMechanismAnimalEarly humanClinical trialsApproved use

A plausible biological rationale, but little data behind it.

07

Claim receipts

Popular claims about 5-Amino-1MQ, checked against the state of the evidence. The verdict describes evidence maturity, never an invented study result.

~ Too earlyBoosts NAD+ and burns fat

Weight and adipose findings come from diet-induced obese mice; no human data has been published.

× False / unsupportedIt is a peptide

It is a small-molecule methylquinolinium NNMT inhibitor, despite being sold alongside research peptides.

~ Too earlyWorks without changing appetite

The appetite-independent weight change was observed in rodents, not in people.

! Safety caveatA safe supplement

It is not a recognized dietary supplement, and human toxicology, interaction and long-term data do not exist.

08

Safety profile

Documented safety data are limited to short rodent studies, in which investigators reported no overt adverse effects at the doses tested; this is not a substitute for human safety characterization. There are no published human toxicology, drug-interaction, long-term, or reproductive-safety data. Theoretical concerns include the broad and context-dependent roles of NNMT and NAD+/SAM metabolism across tissues (liver, cancer, vasculature), the unknown consequences of chronically altering one-carbon/methylation flux, and the unverified purity and identity of material sold as a "research chemical." Because human safety is essentially uncharacterized, it should be regarded as an experimental compound of unknown human risk.

09

Compound notes

  • 5-Amino-1MQ is a small-molecule inhibitor of NNMT (nicotinamide N-methyltransferase), not a peptide.
  • It is studied in preclinical metabolic models for effects on fat-cell energy metabolism and NAD+ salvage.
Safety notes
  • Not FDA-approved; research-only.
  • Human data is minimal; metabolic claims are preclinical.
10

Regulatory status

5-Amino-1MQ is not approved by the FDA (or any major regulator) for any indication and is not a recognized dietary supplement; it is an investigational/research-use-only compound with no publicly documented IND or registered human clinical trials. It is not, as of this writing, a WADA-listed prohibited substance by name, though its NAD+/metabolic mechanism is the kind of area anti-doping bodies monitor.

Research / preclinical

Sold research-use-only; human evidence is limited or preclinical.

11

By the numbers

  • 01It is a small-molecule methylquinolinium NNMT inhibitor, not a peptide, despite being marketed alongside research peptides
  • 02NNMT methylates nicotinamide using SAM, producing 1-MNA and SAH; inhibiting it is proposed to spare nicotinamide for NAD+ salvage
  • 03The foundational evidence is a 2018 diet-induced-obese mouse study showing reduced body weight and white adipose mass without changes in food intake
  • 04In cell models it reduced adipocyte 1-MNA and lipogenesis while reported as selective against related methyltransferases
  • 05No human clinical trials, pharmacokinetics, or human safety data have been published
  • 06It is not FDA-approved and is sold only as a research-use-only chemical

5-Amino-1MQ: research formats

Choose the format you are researching to see route-specific notes.

Primary research format for this small molecule. Highly bioavailable orally.

5-Amino-1MQ is a small NNMT inhibitor (not a peptide chemically) with good oral bioavailability. It is the standard research format because GI absorption is efficient, unlike most peptides. Typically sold as 50 mg capsules.

Oral capsule planning: 50 mg capsule
PHASEDAILY DOSEVOLUME
Low end50 mg once daily1 capsule
Mid100 mg once daily2 capsules
Split (BID)50 mg twice daily1 capsule × 2
This is not a dosing recommendation. Amounts shown are illustrative examples of the concentration math.
12

Sources

Every factual claim above resolves to a real, published source.

  1. Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceBiochemical Pharmacology, 2018, PMID 29155147
  2. Noncoupled Fluorescent Assay for Direct Real-Time Monitoring of Nicotinamide N-Methyltransferase ActivityBiochemistry, 2017, PMID 28121423
  3. Glucose availability regulates nicotinamide N-methyltransferase expression in adipocytesLife Sciences, 2020, PMID 32112869
  4. Reduced calorie diet combined with NNMT inhibition establishes a distinct microbiome in DIO miceScientific Reports, 2022, PMID 35013352
Cite this page

PepCue. “5-Amino-1MQ: the evidence.” PepCue, reviewed June 1, 2026. https://www.pepcue.app/p/5-amino-1mq.

Tracking 5-Amino-1MQ?

Log your doses, run the vial math, and keep a provider-ready record in PepCue.

Compounds