Fix The Root Cause Of Your Health Issues Naturally
Doctor-formulated solutions based on decades of clinical experience and modern research.
Clinically formulated
Natural Ingredients
Quality Assured
Clinically formulated
Natural Ingredients
Quality Assured
Clinically formulated
Natural Ingredients
Quality Assured
Clinically formulated
Natural Ingredients
Quality Assured
Clinically formulated
Natural Ingredients
Quality Assured
Clinically formulated
Natural Ingredients
Quality Assured
Clinically formulated
Natural Ingredients
Quality Assured
Clinically formulated
Natural Ingredients
Quality Assured
Trusted by Patients for Over 30 Years
I have undergone extensive training in both conventional medicine and natural alternatives, which has equipped me with the tools to offer the ideal combination.

Dr. Mark Stengler, NMD, DHSc, MS — Author of 20+ Books

2025 Top Holistic Doctor of the Year

Dr. Angela Stengler, NMD, MS — Author and Co-Owner of Stengler Center

Hope Stengler-Castro, MS Functional Medicine and Nutrition
Doctor Designed Systems That Work
Comprehensive protocols used in our clinic to address root causes & restore balance
Clinically Formulated for Real Results
Ingredients That Work Better Together
Save up to 10% Off When You Bundle a Protocol.
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Digestive Wellness
Support digestion and gut balance naturally everyday.
Regular price From $43.50Sale price From $43.50 Regular price$0.00Regular price From $43.50Regular price$0.00Sale price From $43.50No reviews yet
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PEA + Turmeric Wellness
Targeted relief for inflammation and joint discomfort.
Regular price $59.00Sale price $59.00 Regular price$69.00Regular price $59.00Regular price$69.00Sale price $59.00Sale -
Best SellerBerberine Wellness
Natural support for blood sugar and metabolism.
Regular price $49.95Sale price $49.95 Regular priceRegular price $49.95Regular priceSale price $49.95 -
Best SellerVitamin D3 + K2 (capsules)
Perfect pair for bones, heart, immunity.
Regular price $42.00Sale price $42.00 Regular priceRegular price $42.00Regular priceSale price $42.00
Recommended By Dr Stengler
These are the same formulas used in our clinic to support real patients.
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Best Seller SaleGut Wellness Powder - 60 Scoops
Nourish and soothe your digestive system naturally.
Regular price $89.00Sale price $89.00 Regular price$119.00Regular price $89.00Regular price$119.00Sale price $89.00Sale -
Best SellerSupreme Multi Wellness
Superior multivitamin for energy and wellness.
Regular price $39.95Sale price $39.95 Regular priceRegular price $39.95Regular priceSale price $39.95No reviews yet
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Best SellerCholesterol Wellness
Support healthy cholesterol and heart function naturally.
Regular price $45.00Sale price $45.00 Regular priceRegular price $45.00Regular priceSale price $45.00 -
Best SellerImmune Wellness
Strengthen your defenses and stay healthy year-round.
Regular price $54.95Sale price $54.95 Regular priceRegular price $54.95Regular priceSale price $54.95
Watch Video
Uniqueness of Stengler Supplements
After treating thousands of patients, Dr. Stengler explains why most approaches fail — and what actually works.
Real People, Real Answers
The same products used by our family and our patients.
Hope Stengler-Castro M.S
Master of Science of Functional Medicine and Nutrition
Trusted in her practice, not just on our site.
As a Naturopathic Medical Doctor with a Master's in Nutrition, Dr. Angela Stengler recommends these same formulas to the patients she treats every day.