DNP (2,4-Dinitrophenol)
An industrial chemical sold for fat loss — it can kill you.
Banned / Harmful evidence
☠️Banned & Harmful
Evidence tier
Banned / Harmful
Research weight
Not supported
Citations
19 verified / 19
Classification
Banned & Harmful
⊘
What the evidence says. Linked to serious harm and/or banned in sport and many jurisdictions. Listed for awareness and safety only — NOT a recommendation.
⚠
Health warning. DNP is an industrial chemical illegally sold as a 'fat burner'. It has caused numerous deaths. There is no safe dose — the gap between a 'fat-loss' dose and a lethal one is dangerously small. Never consume it.
What is DNP (2,4-Dinitrophenol)?
DNP (2,4-Dinitrophenol) is a banned or harmful substance marketed for extreme rapid fat loss. NutriDex grades the human evidence as Banned / Harmful. DNP is an industrial chemical (used in dyes, explosives and pesticides) that uncouples mitochondrial energy production, forcing the body to burn energy as heat. Sold illicitly to bodybuilders and dieters for rapid fat loss, it is one of the most dangerous substances marketed as a 'supplement'. Its toxic dose is perilously close to the dose people take, and overdose causes a runaway rise in body temperature that is frequently fatal. Regulators worldwide warn against it; deaths continue to be reported.
Marketed Claims (unproven)
✕(Claimed) extreme rapid fat loss
Dosing & Compounds
Use & Legality
No safe dose exists. DNP is not fit for human consumption under any circumstances.
Active Compounds
Safety & Cautions
⚠ POTENTIALLY FATAL. Causes dangerous hyperthermia (overheating), rapid heartbeat, profuse sweating, agitation, seizures, multi-organ failure and death — sometimes hours after ingestion with no antidote. There is no margin of safety. It is illegal to sell for human consumption. Do not take it under any circumstances; seek emergency care immediately for any exposure. Educational only — always check with your doctor or pharmacist before combining DNP (2,4-Dinitrophenol) with any medicine.
Evidence & Risk Findings ★ 19 studies
regulator action / guidance
UK Food Standards Agency / Home Office DNP reclassification 2023
✓ Source
As of 1 October 2023 DNP was reclassified as a regulated poison, making it a criminal offence to sell to the public without a licence after repeated DNP-related deaths.
agency toxicology profile
ATSDR Toxicological Profile for Dinitrophenols 2021
✓ Source
US federal toxicology profile concluding DNP uncouples oxidative phosphorylation with no safe therapeutic dose, causing hyperthermia, cataracts and death across human and animal data.
Agency / regulator
FSA / Interpol alerts
✓ Source
Repeated international warnings after DNP-related deaths, many in young people.
Safety / toxicology
Grundlingh 2011 (J Med Toxicol)
✓ PubMed
Reviewed DNP fatalities — fatal hyperthermia and multi-organ failure with narrow toxic margin.
observational / self-report analysis
Sublethal DNP toxicities from online self-reports 2023 (PMC)
✓ Full text
Analysis of online self-reports characterized common sublethal DNP effects (hyperthermia, sweating, malaise, yellow skin) among unregulated weight-loss users, complementing fatality-focused literature.
Observational
J Pharm Biomed Anal 2025
✓ PubMed
Retrospective analysis of DNP poisoning cases (early 1900s–2021) identifying characteristic morphological markers of ingestion, notably yellow discoloration of skin, sclera and urine, with yellow skin suggesting prolonged consumption as an indication of substance intake.
Observational
PLOS One 2023
✓ Full text
Analysis of 1,630 posts from 1,234 users across DNP online forums found thermoregulatory, fatigue-related and neurological symptoms significantly more frequent at daily doses >150 mg than below, with profuse sweating and fatigue the most common adverse effects and frequent co-use of T3, clenbuterol and anabolic steroids.
Cohort
Sublethal toxicities from online self-reports (PLOS ONE) 2023
✓ PubMed
Analysis of user self-reports characterized dose-dependent sublethal DNP effects (hyperthermia, sweating, malaise, cataract/skin reactions), showing toxicity occurs even at sub-lethal 'diet' doses.
review
Silva et al. 2020 'Diet aid or aid to die' (Arch Toxicol)
✓ PubMed
Comprehensive update review concluding that DNP, banned for human use since 1938, continues to cause fatal intoxications (hyperthermia, tachycardia, hypotension, acute renal failure) with no specific antidote, prompting the 2015 Interpol worldwide warning.
Safety / toxicology
Case series
✓ Full text
Deaths reported even from doses taken intentionally for weight loss.
epidemiology/poison-centre series
Gziut & Thomas 2022 (Clin Toxicol)
✓ PubMed
WHO-linked analysis of poisons-centre data found systemic DNP exposures rose from 4 (2010) to 71 (2015), with a high case fatality of 11.9% and no sex difference.
Cohort
Robert (Toxicoepidemiology & predictors of death, NPIS) 2021
✓ PubMed
Pooled analysis of DNP exposures found a high case fatality of 11.9% (95% CI 9.0-15.4%), with no sex difference; acidosis, tachycardia, hyperpyrexia, and agitation/confusion were independent predictors of death.
Cohort
Tewari (International poisons-centre trends) 2021
✓ PubMed
Multi-national poisons-centre surveillance documented substantial increases in systemic human DNP exposures across Europe, Australia, and North America between 2010 and 2015, with fatal outcomes common.
commentary/review
Dantrolene in DNP overdose debate 2019 (Am J Emerg Med)
✓ PubMed
Critical appraisal arguing that dantrolene therapy for DNP poisoning is biochemically implausible and likely futile, with at least one reported case of ineffective use, underscoring that management remains supportive (aggressive cooling, fluids) with no proven antidote.
case series / mechanistic
Lindeman 2025 (Toxicol Rep)
✓ Full text
Two Swedish DNP poisonings (one fatal suicidal ingestion, one non-fatal weight-loss use) supported a self-amplifying 'runaway uncoupling' feedback loop, with the fatal case progressing within hours to hyperthermia, hyperkalemia and ATP depletion.
case report
Frontiers Public Health 2024 case report
✓ Full text
A 21-year-old bodybuilder with muscle dysmorphia died after ~6 months of DNP plus anabolic steroid use and a final 2 g dose, presenting with the classic triad of tachycardia, tachypnea and profuse sweating before fatal multi-organ failure.
case report
Survival of acute-on-chronic DNP overdose 2026 (J Med Toxicol)
✓ PubMed
An 18-year-old female survived an acute-on-chronic DNP overdose presenting with a hypermetabolic state and widespread ST-segment depression with troponin I elevation; serial DNP levels followed first-order kinetics with an ~18-hour elimination half-life, providing rare human overdose pharmacokinetic data.
Cohort
Clinical features & treatment of acute DNP poisoning 2011
✓ PubMed
Case series of acute DNP poisoning described the consistent clinical syndrome of hyperthermia, tachycardia, sweating and agitation progressing to multi-organ failure, with supportive cooling/management as the only available treatment.
pharmacokinetic modeling study
Bartelink et al. 2022 PBPK model for DNP (J Pharmacokinet Pharmacodyn)
✓ PubMed
A physiologically-based pharmacokinetic model of DNP characterized its absorption and tissue distribution, helping explain the narrow margin between weight-loss doses and the accumulation that drives lethal hyperthermia.