We determined the cardioprotective impact of ethanolic flaxseed seeds extract through an assessment of its immunomodulatory and antiangiogenic characteristics in rats fed with an atherogenic diet. Group 1 fed on the standard diet. Groups 2 and 3 fed on an atherogenic diet (AD) for 12 weeks. Groups 3 and 4 daily supplemented with ethanolic extract of flaxseed seeds (EEFS) 400mg/kg b.w starting from 7 th week till the end of 12 th week. AD-fed rats had increased serum lipids, CRI-I, CRI-II, cardiac enzymes, and pro-inflammatory markers. Compared to the ADfed group, EEFS supplementation influenced hypo-lipidemic, anti-inflammatory, anti-angiogenic, and anti-atherogenic characteristics after AD-feeding. EEFS displayed antioxidant capacity in vitro and in vivo. Chromatographic analysis of EEFS demonstrated the presence of phenolic, flavonoid compounds, and vitamin C. The data concludes a safe application of EEFS in atherogenesis-induced cardiac disease management.