The effect of brand image on customer loyalty toward supplementary products market are a critical aspect of marketing strategy, particularly in the health and wellness industry. This study aims to investigate the relationship between brand image and customer loyalty specifically within the context of supplementary products. By analyzing survey data collected from a diverse sample of consumers, this study seeks to identify key drivers of brand image and loyalty in the supplementary product market. It will employ statistical techniques such as regression analysis to assess the strength and significance of relationships between variables. Through a comprehensive review of existing literature and empirical research, this study will explore how various elements of brand image, such as perceived quality, trustworthiness, and alignment with health goals, influence consumer loyalty toward Supplementary products. It will also examine the role of factors like brand reputation, packaging, marketing communication, and consumer perceptions of product efficacy in shaping brand image and subsequent loyalty. The findings of this study are expected to provide valuable insights for Supplementary products manufacturers and marketers seeking to enhance brand image and foster greater consumer loyalty. By understanding the factors that drive consumer perceptions and behaviors in this market segment, companies can develop more effective branding strategies, product formulations, and communication approaches to attract and retain loyal customers. Ultimately, the study aims to contribute to the body of knowledge on brand management and consumer behavior in the context of health-related products.