Targeted, Doctor-Backed Supplements for Real Results
Clinician-formulated and expertly selected to support your hormones, gut, and overall well-being.
About Dr. Cassie Smith
Your Health Breakthrough Starts Here.
Dr. Cassie Smith is a dual board-certified endocrinologist and founder of Modern Endocrine. She combines cutting-edge science with a functional, whole-body approach to help patients heal their gut, rebalance hormones, and restore energy naturally.
Known for making complex issues like thyroid dysfunction and insulin resistance easy to understand, Dr. Cassie empowers patients to take control of their health—with real answers and no guesswork.
Why Our Supplements Work
Expertly Curated
Every product is hand-selected by Dr. Cassie Smith and our team of medical professionals, rooted in science, not trends.
Compassionate Care
We prioritize your comfort, well-being, and long-term success with supplements designed to support real healing, not just symptom relief.
Whole-Body Wellness
We take a functional, holistic approach—pairing high-quality supplements with lifestyle guidance, nutrition support, and stress management.
Wellness Shop
- Hormones
- Skin
- Thyroid
- Inflammation
- eBook
Gut Health
Our gut-focused supplements are created by medical experts to support digestion, immune function, and gut-brain balance—because better gut health = better everything.
As Featured In & Certifications
Stay Up To Date
Receive the latest updates, health tips, and exclusive offers from Modern Endocrine.
Sign Up, Be Informed & Stay Healthy
Be the first to know about new products, upcoming events, and special promotions!