Background Breast cancer is one of the most common malignancies affecting women worldwide, emphasizing the need for effective therapeutic strategies. Phytochemicals derived from plants have gained significant attention due to their potential anticancer properties. Objective This review aims to comprehensively assess the existing literature on using phytochemical-loaded formulations as a therapeutic approach for breast cancer. By analyzing the available evidence, we aim to determine the potential benefits and limitations of these formulations in terms of their anticancer activity, bioavailability, and safety. Methods A systematic search of relevant databases was conducted to identify studies investigating phytochemical-loaded formulations in the context of breast cancer treatment. The inclusion criteria encompassed clinical trials, preclinical studies, and in-vitro experiments that reported using phytochemicals in various formulations for breast cancer treatment. Data extraction was performed to ensure the reliability and validity of the included studies. Results The review highlights the diverse range of phytochemicals used in different formulations for breast cancer treatment. Findings suggest that these formulations exhibit promising anticancer effects by targeting multiple signaling pathways in breast cancer progression, including cell proliferation, apoptosis, angiogenesis, and metastasis. Moreover, various delivery systems, such as nanoparticles, liposomes, and micelles, have enhanced phytochemicals' bioavailability and targeted delivery. Conclusion Phytochemical-loaded formulations hold immense potential as a therapeutic approach for breast cancer treatment. The reviewed evidence indicates their ability to inhibit tumor growth, enhance chemotherapy effectiveness, and reduce adverse effects. However, further research is warranted to optimize the formulation strategies, investigate the long-term safety profiles, and conduct large-scale clinical trials to establish their efficacy and applicability in clinical settings. These findings contribute to developing novel phytochemical-based therapies for breast cancer, offering new avenues for personalized and targeted treatment options.