Aim: The aim of our study is to show whether the administration of hydrogen-rich saline solution (HRSS) intraperitoneally before left main coronary artery (LAD) ischemia protects the myocardium against ischemia-reperfusion (IR) injury. Materials and methods: After ethics committee approval. 24 Wistar Albino rats were divided into 4 groups. 6 rats in each group. https://storeanimalwiz.shop/product-category/pumps-water/