The market for nutritional supplements in psychiatric disorders is experiencing robust growth, driven by increasing awareness of mental health issues, a rising prevalence of psychiatric disorders globally, and a growing preference for complementary and alternative medicine approaches. The market's value, estimated at $8 billion in 2025, is projected to exhibit a compound annual growth rate (CAGR) of 7% from 2025 to 2033, reaching approximately $14 billion by 2033. This growth is fueled by several key trends, including the increasing integration of nutritional supplements into conventional psychiatric treatment plans, the development of specialized formulations targeting specific mental health conditions (such as anxiety, depression, and ADHD), and the expanding research base demonstrating the efficacy of certain nutrients in supporting mental well-being. Leading companies such as Now Foods, Nature's Bounty, and Garden of Life are actively contributing to market expansion through product innovation, strategic partnerships, and robust marketing efforts. However, the market also faces certain restraints, including regulatory challenges related to supplement efficacy claims, concerns regarding potential drug interactions, and the need for rigorous clinical evidence supporting the benefits of specific supplements. Market segmentation is primarily based on supplement type (e.g., omega-3 fatty acids, vitamins B, probiotics), target condition, and distribution channel (e.g., online retailers, pharmacies).