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Eugenol, a natural compound available in honey and various plants extracts including cloves and Magnoliae flos, is exploited for various medicinal applications. Since most of the drugs used in the cancer are apoptotic inducers, the apoptotic effect and anticancer mechanism of eugenol were investigated against colon cancer cells. Antiproliferative effect was estimated using MTT [3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyl tetrazolium bromide assay]. Earlier events like MMP (mitochondrial membrane potential), thiol depletion and lipid layer break were measured by using flow cytometry. Apoptosis was evaluated using PI (propidium iodide) staining, TUNEL (terminal deoxynucleotidyl transferase‐mediated dUTP nick end labelling) assay and DNA fragmentation assay. MTT assay signified the antiproliferative nature of eugenol against the tested colon cancer cells. PI staining indicated increasing accumulation of cells …