The use of natural substances in cancer treatment is the current need because alternative approaches are intensive and have numerous negative side effects. In this current study, the natural product Prunus dulcis (Almond) was screened for its ability to inhibit the proliferation of (PA-1) cancer cells. In the MTT assay, IC50 values obtained are 220 μg/ml. Reactive Oxygen Species (ROS), Mitochondrial Membrane Potential (MMP) and Apoptosis induction in cancer cells of the ovary are noticed and this assay shows the anti-cancerous activity of Prunus dulcis. Catechin has emerged as the major bioactive compound of Prunus dulcis. Anti-bacterial activity of Prunus dulcis at various concentrations of 50, 80, 90 and 100μl was tested. 90μl of Prunus dulcis extract showed a good antibacterial effect against Saccharomyces cerevisiae. This research shows that the almond bioactive molecules inhibit the proliferation of ovarian cancer cell lines. The identified promising active pharmaceutical ingredient catechin needs focused research.