Your health practitioner has done a lot of effort to get you the best products available: Products of Thorne Research. They expect and get ingredients of superior quality, innovative and therapeutic formulas, pure capsules and liquids, without additives that potentially could cause allergic reactions. As Centropa, Thorne´s Partner in Continental Europe since 1992, we are proud to offer you an extensive product line of more than 280 quality items, including a highly successful Veterinary Supplement line.


Since 1984 THORNE has earned the unwavering trust of thousands of health-care practitioners worldwide. Indeed, in many cases, a patient’s life actually depends on the quality, purity and integrity of our products. Undeniably, our actions throughout the years have always spoken louder than the rhetoric of our competitors. Confidence in Thorne is the single most important reason why practitioners turn to us for their critical nutritional supplement needs.
In this competitive industry the amount of dollars spent on advertising is tremendous, with all companies claiming they have the best products. Thorne Research’s reputation wasn’t shaped through clever marketing, but rather, through the unbiased scrutiny and approval of health-care practitioners throughout the world who discovered one important detail — our products consistently produced positive results in their patients, also in Europe.
Our reputation for over 18 years has been shaped through the unbiased scrutiny and unanimous approval of health-care practitioners throughout the world. Independently, they discovered one important fact - Thorne products consistently produced positive results in their patients!
Confidence is quantifiable. It can be measured in terms of referrals sent to us, loyal, long term customers, and our stability even in the most difficult of economic times. Your confidence in Thorne says a lot about how you and your patients feel about us. The word confidence speaks assertively of our purpose. Undeniably, our actions throughout the years have always spoken louder than the rhetoric of our competitors. Confidence in Thorne is the single most important reason why practitioners turn to us for their critical nutritional supplement needs. Over the years we’ve earned the unwavering trust of thousands of health-care practitioners. Indeed, in many cases, your patient’s life actually depends on the quality, purity and integrity of Thorne products.

Thorne has been a leader in the field of nutritional supplements for over 18 years. Our founders, Al and Kelly Czap, are as committed today as they were in the beginning to continue to listen to our customers and provide them with an innovative and substantive selection of unadulterated products that ultimately help to improve patient wellness. Our sophisticated, unique manufacturing equipment, and continual quality control, ensures the highest quality and purity in our industry.
Earning Your Confidence
Results: Simply said, patient wellness is very measurable. Thorne is one of the most recognized names in the industry, not only for the purity of our hypoallergenic products, but also for our informational, educational, and technical services. This combination of exceptional products coupled with unsurpassed information services helps you accomplish what is one of the most difficult and rewarding challenges in the world – help others get well.
Details: Because we are the manufacturer and distributor, we can control and inspect each step of the process, from the selection of raw materials, to the encapsulating process, and finally to the careful packing and accurate shipping of your order.
Testing: Our sophisticated laboratory performs assays on all raw materials and finished products to assure our label claims are always exact. Highly specialized outside laboratories are utilized for microbial testing of raw materials and finished products.
Convenient: We are open Monday through Friday, 6:30 AM to 5:00 PM (USPacific time) to take your orders or answer questions. Our 24-hour / 7 day a week website offers you physician education.
Service: We continue to staff our customer service department with friendly, knowledgeable and well-trained representatives to quickly process your orders and answer non-technical questions.
Physicians on Staff: In addition to our skilled customer service staff, we also provide you with prompt, friendly, and accurate technical telephone and web support from a qualified staff of physicians who can assist you with protocol questions.
Education: Our customers receive a complimentary subscription to Alternative Medicine Review, one of the most recognized peer-reviewed publications in the industry. Alternative Medicine Review provides accurate and clinically relevant articles, reviews, and abstracts. Thorne is also a leader in providing our customers with outstanding collateral literature and brochures to assist you in always making the best wellness decisions for your patients.

Alternative Medicine Review, published by Thorne Research, is in its eighth year of publication and is indexed in Medline, Embase (the premier European medical database), Cinahl (a U.S. database for nurses and other allied health professionals), and Index Medicus. Alternative Medicine Review publishes literature reviews, original research, editorial comment, monographs, and book reviews on subjects interesting to, and clinically valuable for our customers. The feedback we receive from readers is consistently positive and appreciative. We continue to receive unsolicited manuscripts from talented reserchers and authors worldwide, which serve to sustain the exellent quality of information we strive to provide. This peer-reviewed publication is another service Thorne Research and CENTROPA continue to make available to its customers worldwide at no charge.