Derris elliptica

Rotenone, the primary active compound in Derris elliptica, inhibits mitochondrial complex I (NADH:ubiquinone oxidoreductase), blocking electron transport and disrupting cellular respiration. This prevents ATP production, causing paralysis and death in insects and fish. The same mechanism underlies its neurotoxicity in humans, as mitochondrial dysfunction in neurons has been linked to Parkinson's-like symptoms with prolonged exposure. Evidence level: C (mechanistic studies support this action).

Derris elliptica is considered unsafe during pregnancy and breastfeeding. The rotenone content carries significant neurotoxicity risks, and potential systemic absorption through skin could affect fetal development. Animal studies have shown rotenone exposure can cause developmental toxicity. Pregnant women, those planning pregnancy, and breastfeeding mothers should avoid all contact with Derris elliptica preparations. Evidence level: C (traditional contraindication supported by mechanistic concerns).

Derris elliptica is restricted to topical application only for parasitic skin conditions. There is no standardized clinical dosage due to limited research. Traditional use involves applying root preparations to affected skin areas for short durations. Internal use is strictly contraindicated due to neurotoxicity. Users should limit frequency and duration of topical application and avoid broken skin. Evidence level: C (traditional use). Consult a qualified practitioner before use.

Due to rotenone's neurotoxic properties, Derris elliptica may theoretically interact with medications affecting the nervous system, including Parkinson's disease treatments and drugs with neurotoxic potential. However, since appropriate use is limited to topical application, systemic drug interactions are unlikely. No specific clinical interaction studies exist. Patients with Parkinson's disease or on neurological medications should avoid exposure entirely. Evidence level: C (theoretical based on mechanism).

Prolonged or repeated exposure to Derris elliptica can cause Parkinson's-like symptoms including tremors, muscle rigidity, and movement difficulties, attributed to rotenone-induced neurotoxicity. Topical application may cause skin irritation or contact dermatitis in sensitive individuals. Internal consumption is extremely dangerous and can result in respiratory paralysis, liver damage, and potentially death. Those with existing neurological conditions should avoid all exposure. Evidence level: C.