Tanshinone I is a diterpenoid quinone isolated from the roots of Salvia miltiorrhiza, widely studied for its potential therapeutic applications, particularly in traditional Chinese medicine. It is primarily recognized for its cardioprotective effects, helping to improve blood circulation, protect heart cells, reduce lipid oxidation, and lower the risk of cardiovascular diseases. Additionally, it exhibits anti-inflammatory and antioxidant properties, making it a candidate for treating conditions related to oxidative stress and inflammation. It is also used in dietary supplements and cosmetics due to its ability to slow cellular and skin deterioration. Research suggests its potential in cancer therapy, as it may inhibit the growth of certain cancer cells. Furthermore, Tanshinone I is being explored for its neuroprotective effects, which could be beneficial in managing neurodegenerative disorders. Its diverse biological activities make it a promising compound for various medical and pharmaceutical applications.