Fat loss research
The clearest, most repeated finding: obese mice lost body weight and fat mass on 5-Amino-1MQ without eating less 1Source 1Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceNeelakantan H, Vance V, Wetzel MD, Wang HL, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ · 20182Source 2Nicotinamide N-methyltransferase Inhibition Mitigates Obesity-Related Metabolic DysfunctionsBabula JJ, Bui D, Stevenson HL, Watowich SJ, Neelakantan H · 2024. This is the main reason people are interested — though it is animal data, not human proof.
Metabolic health support
In mice, it improved blood sugar, insulin, and liver fat 2Source 2Nicotinamide N-methyltransferase Inhibition Mitigates Obesity-Related Metabolic DysfunctionsBabula JJ, Bui D, Stevenson HL, Watowich SJ, Neelakantan H · 2024. Researchers see NNMT inhibition as a promising angle for metabolic syndrome 4Source 4Nicotinamide N-methyltransferase (NNMT): a novel therapeutic target for metabolic syndromeSun WD, Zhu XJ, Li JJ, et al. · 2024.
NAD+ (a cell energy molecule) and how cells make energy
By blocking NNMT, it raises NAD+ and SAM inside cells, which supports how cells make and use energy 1Source 1Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceNeelakantan H, Vance V, Wetzel MD, Wang HL, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ · 20184Source 4Nicotinamide N-methyltransferase (NNMT): a novel therapeutic target for metabolic syndromeSun WD, Zhu XJ, Li JJ, et al. · 2024. This makes it interesting to people studying aging and metabolism.
The safety picture overall
The honest picture: nobody has run a human safety trial on 5-Amino-1MQ, so everything below is from mice and cultured cells. In the 11-day mouse study, 9 treated animals lost 2.0 ± 0.6 g of body weight (about 5.1% from baseline) while 9 controls gained 0.6 ± 0.4 g, with no difference in food intake and no observable adverse effects reported 1Source 1Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceNeelakantan H, Vance V, Wetzel MD, Wang HL, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ · 2018. The tolerability ceiling people quote comes from a dose-escalation study spanning 10 to 150 mg/kg/day in TWO mice, where 60 mg/kg/day produced no observable adverse effects 1Source 1Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceNeelakantan H, Vance V, Wetzel MD, Wang HL, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ · 2018 — a denominator worth seeing before treating it as a safety margin. In cultured pre-adipocytes the compound is cytotoxic at high concentration: no effect on viability at 10 µM, modest cytotoxicity from 100 to 300 µM, and roughly 40% loss of viability at 600 µM 1Source 1Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceNeelakantan H, Vance V, Wetzel MD, Wang HL, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ · 2018. Lab screening also found off-target inhibition of monoamine oxidase-A at higher concentrations 2Source 2Nicotinamide N-methyltransferase Inhibition Mitigates Obesity-Related Metabolic DysfunctionsBabula JJ, Bui D, Stevenson HL, Watowich SJ, Neelakantan H · 2024. Short studies in mice cannot rule out problems that appear over months or years in people. Treat this as an experimental compound and talk to a doctor first, particularly if you take any medication.
All safety information comes from animal studies. The absence of human data here was checked rather than assumed: PubMed has no record under "5-amino-1MQ" and no clinical study in people of any drug blocking its target (an enzyme called NNMT), ClinicalTrials.gov has no registered study of either the compound or the target, and no company has announced a human trial programme. The EU and WHO trial registries were not searched directly, so a trial registered only outside the US cannot be ruled out. The main mouse study gave 20 mg/kg per injection under the skin three times daily — about 34 mg/kg/day — to 9 obese mice (made obese by diet) for 11 days, against 9 saline controls 1Source 1Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceNeelakantan H, Vance V, Wetzel MD, Wang HL, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ · 2018; a second used 10-32 mg/kg once daily for about a month 2Source 2Nicotinamide N-methyltransferase Inhibition Mitigates Obesity-Related Metabolic DysfunctionsBabula JJ, Bui D, Stevenson HL, Watowich SJ, Neelakantan H · 2024. Those are animal doses and do not convert to human milligram doses. One discrepancy worth knowing if you read around: secondhand write-ups describe the mouse study as dosing through drinking water at about 40 mg/kg/day. The primary paper, read in full, describes injection under the skin at 20 mg/kg three times daily 1Source 1Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceNeelakantan H, Vance V, Wetzel MD, Wang HL, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ · 2018. On precision: the compound did not block several related enzymes (DNMT1, PRMT3, NAMPT or SIRT1) at tested concentrations, and blocked COMT only 10% at 600 µM 1Source 1Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in miceNeelakantan H, Vance V, Wetzel MD, Wang HL, McHardy SF, Finnerty CC, Hommel JD, Watowich SJ · 2018 — in other words, it hits its intended target cleanly at relevant concentrations, with an effect on MAO-A (an enzyme that breaks down mood chemicals) appearing only at higher ones 2Source 2Nicotinamide N-methyltransferase Inhibition Mitigates Obesity-Related Metabolic DysfunctionsBabula JJ, Bui D, Stevenson HL, Watowich SJ, Neelakantan H · 2024. How it moves through the human body, its long-term safety, and an effective human dose are all unknown. Note also that this is a small molecule, not a peptide — it is catalogued here because people ask about it alongside peptides.