A life-changing health routine, built for your microbiome
Discover science-backed supplements designed to support your digestive health and overall wellness.
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12
DAYS12
HOURS12
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SECONDSOur scientific advisory board is comprised of practicing Israeli physicians and researchers, gastroenterologists, endocrinologists, gynecologists, who work in the conditions we target, every single day.
Testimonials
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Meet our medical team
Daniel Kaufman
President & Advocate
An award-winning director, screenwriter, and storyteller, Daniel brings the mission...
An award-winning director, screenwriter, and storyteller, Daniel brings the mission of Circady to the world. With a career built on authentic human narratives, from documentaries to major brand campaigns, he knows how to make complex truths land. At Circady, he's the voice ensuring that what our doctors know reaches the people who need it most.
Dr. Alf Fischbein, MD
Chief Medical Officer
A graduate of the University of Lund, Sweden, Dr. Fischbein...
A graduate of the University of Lund, Sweden, Dr. Fischbein spent two decades as Associate Professor at Mount Sinai School of Medicine in New York. An international authority in Occupational and Environmental Health, he has served on expert committees for the EPA, the International Labour Office in Geneva, and the International Federation of Metalworkers. He has pioneered diagnostic innovation in toxicology — bringing that same precision to how Circady validates every ingredient we use.
Dr. Herman Weiss, MD MBA
Head of Women's Health & PCOS
Trained at Einstein/Montefiore in New York and practicing in Israel...
Trained at Einstein/Montefiore in New York and practicing in Israel for over 15 years, Dr. Weiss is one of the most recognized OBGYN specialists in hormonal disorders and PCOS. With an MD from Ohio State and an MBA from George Washington University, he combines deep clinical experience with a holistic philosophy — helping women regain control of their ovarian health for over two decades. He co-founded FibroControl and actively consults on PCOS treatment worldwide.
Dr. Omar Saeed, PhD
Product Innovation
A pharmacological researcher with a PhD in pharmacology and deep...
A pharmacological researcher with a PhD in pharmacology and deep roots in natural medicine, Dr. Saeed leads a pioneering natural therapeutics company in Kufr Kanna, Israel. He has spent his career integrating clinical pharmacological science with plant-based compounds — the exact intersection that defines every Circady formula. His work ensures that "natural" at Circady means rigorously tested, not just label-friendly.
Mike Teiler
Head of Product
A seasoned pharmaceutical strategist with deep expertise in portfolio management...
A seasoned pharmaceutical strategist with deep expertise in portfolio management and drug development, Mike spent years at the highest levels of global pharma — including Teva International — before turning his focus to natural medicine. As Chief Pharmaceutical Officer at LeviCure, he led cutting-edge research into reversing Type 1 Diabetes. At Circady, he bridges rigorous pharmaceutical standards with the world of natural formulation.