The phytochemical profile, antioxidant, antibacterial, and cytotoxicity of Senna hirsuta (MÀ Sh) leaf extracts were investigated in human prostate cancer PC-3 cell lines. Antioxidant bioactive components like phenolics, tannins, and flavonoids were measured at 15.36 � 0.19, 2.97 � 0.11, and 19.77 � 0.51, respectively. An intense dose-dependent radical scavenging activity was observed for MÀ Sh with 83 % in 500 μg/mL for DPPH. MÀ Sh boosted ABTS radical inhibition from 35 % at 100 μg/ml to 70 % at 500 μg/ml, whereas hydroxyl radical scavenging was 96 % at 500 μg/ml, significantly greater than butylated hydroxytoluene (91.91 %). The maximum NO scavenging activity of MÀ Sh was 83 %, and the lipid peroxidation inhibition was 87 % at 500 μg/ml. The MÀ Sh exhibited antibacterial efficacy against Escherichia coli (25 mm), Bacillus subtilis (24 mm), and Staphylococcus aureus (21 mm). The MTT assay was used to study anti-proliferative activity, which inhibited PC-3 cell growth with an IC50 of 257.13 μg/mL over 24 hours. These results demonstrate that MÀ Sh inhibits PC-3 cell proliferation by shedding from the surface and assuming a spherical shape. Additionally, the morphology of PC-3 cells showed shrinkage, blebbing membrane condensation, and nuclear chromatin margination, indicating that MÀ Sh was cytotoxic to PC-3 Cells.