Symphytroph, yomwe imadziwikanso kuti pymphothion, ndi insecticide organophosphorus insecticide yomwe imakhala yothandiza kwambiri polimbana ndi tizirombo ta dipteran. Amagwiritsidwanso ntchito poletsa ma ectoparasites ndipo amakhala ndi zotsatira zazikulu pa ntchentche zapakhungu. Ndiwothandiza kwa anthu ndi ziweto. Poizoni kwambiri. Ikhoza kuchepetsa ntchito ya cholinesterase mu magazi athunthu, kuchititsa mutu, chizungulire, irritability, nseru, kusanza, thukuta, salivation, miosis, kukomoka, dyspnea, cyanosis. Pazovuta kwambiri, nthawi zambiri zimatsagana ndi edema ya m'mapapo ndi edema yaubongo, zomwe zimatha kupha. Mu kupuma kulephera.