
Founder & CEO
Cassandra Posey
Cassandra Posey is the founder of Cognitive Function, a company born from her personal journey with ADHD, dyslexia, and mental health challenges. Diagnosed at a young age, Cassandra’s brain functioned differently, leading to struggles with focus, organization, and anxiety. Despite being prescribed various medications over the years, she never felt fully supported by conventional treatments.
In 2018, after a difficult period, Cassandra made the bold decision to step away from pharmaceuticals entirely. This choice led her down a path of self-discovery, exploring holistic approaches like diet, lifestyle changes, and natural remedies. She became deeply interested in herbal medicine, functional mushrooms, and nutrition, which eventually inspired her to create her own line of products focused on mental clarity and overall wellness.
Cognitive Function was founded with a clear mission: to offer clean, transparent products that support mental health, focus, and well-being. Cassandra’s aim is to provide a sustainable, holistic alternative to traditional treatments, empowering individuals—especially those with ADHD—to take control of their health and embrace healthier, more balanced lives.
Today, Cassandra continues to handcraft all of the products and personally oversees every aspect of the business. She is committed to creating a brand that prioritizes transparency, quality, and integrity in the wellness space. Her journey is a testament to resilience, and her work with Cognitive Function reflects her passion for mental and physical freedom, helping others live their best lives on their own terms.
