Dr. Eleanor Marcus, Founder & Chief Formulator
Nutrition scientist trained at the Harvard School of Public Health, with over 12 years in clinical nutrition research at Massachusetts General Hospital. Dr. Marcus is passionate about solving pill fatigue and making wellness enjoyable. She’s also a mom of two, and built Ellie to be something her own family would actually look forward to taking.
Rachel Cohen, Head of Product Innovation
Former R&D lead at Nestlé Health Science, where she developed functional food and supplement products. Rachel brings deep expertise in ingredient sourcing and formulation. She’s a mom of three, and believes supplements should fit naturally into busy daily routines.
Dr. Mark Tan, Director of Clinical Research
Holds a PhD in Nutritional Biochemistry from Stanford University. He has published over 20 peer-reviewed papers on bioactive delivery and nutrient stability. At Ellie, he oversees clinical validation of formulas to ensure every product is evidence-based. On weekends, you’ll find him running marathons and testing new recovery protocols.
Sarah Patel, Head of Community & Customer Experience
With a background in wellness coaching and brand building at Whole Foods Market, Sarah ensures Ellie always puts real people first. She’s passionate about building supportive communities around health. A yoga teacher and mom of one, she helps bridge the gap between science and everyday life.
Advisory Board
Ellie works closely with an advisory board of physicians in dermatology, women’s health, and metabolism, who review and guide each new product launch to ensure clinical standards and safety.
