👉 Aspidinol is a compound found in the bark of several species of plants, including Aspidistra elatissima and Aspidistra transversa. It is a natural insecticide that acts by blocking the action of the neurotransmitter serotonin. In insects, aspidinol inhibits the synthesis of serotonin, which is essential for regulating mood and behavior in many organisms. This compound has been used historically to control pests by preventing them from producing serotonin, thereby reducing their population density.