Rotenone

Rotenone is a highly toxic isoflavonoid compound derived from plants that acts as a potent mitochondrial poison. The WHO classifies rotenone as moderately toxic to humans with no documented therapeutic benefits.

Origin & History

Rotenone is a naturally occurring isoflavone compound extracted from the roots and stems of tropical leguminous plants, particularly Derris elliptica, Lonchocarpus, and Tephrosia species. It is isolated using organic solvents like ethanol or chloroform, followed by crystallization or chromatography purification, appearing as colorless to brownish-white crystalline powder with the formula C₂₃H₂₂O₆.

Historical & Cultural Context

Rotenone was first isolated in 1895 by Emmanuel Geoffroy from Lonchocarpus nicou, with Japanese chemist Kazuo Nagai isolating it from Derris roots in 1902 and naming it based on 'roh-ten,' the Japanese word for the plant. Its earliest recorded use dates to 1848 as an insecticide for controlling leaf-eating caterpillars, with no documented traditional medicinal applications.

Health Benefits

• No therapeutic health benefits documented - research shows rotenone is classified as moderately toxic to humans by WHO
• Historical use limited to insecticidal applications since 1848, not human health
• Highly toxic to aquatic organisms, earthworms, and honeybees
• No clinical trials or meta-analyses found evaluating therapeutic use in humans
• Absence of evidence for any medicinal applications in the provided research

How It Works

Rotenone inhibits Complex I of the mitochondrial electron transport chain by blocking NADH-ubiquinone oxidoreductase activity. This disruption prevents ATP synthesis and leads to cellular energy depletion and oxidative stress. The compound specifically targets mitochondrial respiration, causing cell death in exposed organisms.

Scientific Research

The research dossier contains no human clinical trials, randomized controlled trials, or meta-analyses evaluating rotenone for therapeutic use. The available sources focus exclusively on rotenone's chemical properties, insecticidal applications, and toxicology rather than clinical efficacy studies.

Clinical Summary

No clinical trials exist investigating rotenone for human health benefits due to its established toxicity profile. Research focuses primarily on its role as a toxicological model for Parkinson's disease in laboratory settings. Environmental and occupational exposure studies demonstrate significant health risks including neurological damage. The compound has been banned as a pesticide in many countries due to safety concerns.

Nutritional Profile

Rotenone is a naturally occurring isoflavonoid (rotenoid) compound extracted primarily from the roots of Derris elliptica, Lonchocarpus species, and Tephrosia vogelii — it has no nutritional value and is not consumed as a food or dietary supplement. Molecular formula: C23H22O6, molecular weight: 394.42 g/mol. It is a lipophilic crystalline solid, poorly soluble in water (<1 mg/L at 20°C) but highly soluble in organic solvents. Rotenone contains no meaningful macronutrients (zero protein, carbohydrates, or dietary fiber in functional sense), no vitamins, and no essential minerals. Its bioactive profile is defined entirely by its toxicological properties: it is a potent inhibitor of mitochondrial Complex I (NADH-ubiquinone oxidoreductase) in the electron transport chain, with an IC50 of approximately 4–20 nM in isolated mitochondria. It also inhibits microtubule polymerization. Typical insecticidal formulations contain 1–5% rotenone by weight. Oral LD50 in rats is approximately 132–1500 mg/kg (varies by formulation and solvent). Dermal absorption is limited but inhalation exposure is considered more hazardous. No bioavailability data exists in a nutritional context, as ingestion constitutes a toxicological exposure, not a nutritional one.

Preparation & Dosage

No clinical dosage information is available in the research. The sources do not specify studied dosage ranges for human use, standardized extract concentrations, or formulation specifications for therapeutic applications. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Not applicable - no synergistic compounds identified due to toxicity

Safety & Interactions

Rotenone exposure can cause severe neurological symptoms, respiratory depression, and potential Parkinson's-like effects. The compound is highly toxic to aquatic life and beneficial insects including honeybees. Occupational exposure may lead to dermatitis, nausea, and tremors. Pregnant women should avoid all exposure as rotenone can cross the placental barrier and cause developmental toxicity.