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Effective Natural Formulations

About Us

Recognized leader in the field of natural medicine.

Bio-Botanical Research, Inc. was founded in 1987 in response to the needs of physicians addressing opportunistic infections. The following year, Great Smokies Diagnostic Laboratories (now Genova) was sent a sample of Biocidin® by a physician and had it tested for sensitivity against bacteria and yeast species. They found that Biocidin® was “the most powerful inhibitor of pathogenic organisms” that they had tested, and that it was “equal or more effective than traditional therapies”. They began to refer physicians, and soon many practitioners across the country were reporting outstanding clinical results.

In response to health care practitioners’ continued request for effective solutions to address problems associated with intestinal ecology, immune system disregulation and detoxification, a selection of companion products were developed. Today, over 27 years later, Bio-Botanical Research, Inc. is recognized as a leader in the field of natural medicine.

Founding director Dr. Rachel Fresco L. Ac., Ph. D. continues to use her extensive background in medical herbology, functional medicine and clinical nutrition to develop innovative specialty products for health professional use. Dr. Fresco is a popular speaker on the topic of biofilms, microbiome balance, and systemic microbial challenges.

About Nutritional Medicine Ltd

Corene Humphreys, the founder of Nutritional Medicine Ltd is a registered naturopath from New Zealand with over 30 years experiance in the medical industry.

Her initial training was in the field of medical microbiology and after graduating as a naturopath, she operated a multidisciplinary practice for seven years, specializing in Functional Medicine. She also served as a clinical consultant for a number of specialty diagnostic companies which lead her to immigrate to the U.S. in 2000.

During her role with the American company Genova Diagnostics (formerly Great Smokies Diagnostic Laboratory), Corene was instrumental in developing a comprehensive gastrointestinal profile (CDSA 2.0), along with other specialty GI and metabolic profiles. She also served as an educational resource for physicians, consulting to literally thousands of practitioners in America as well as international clients.

Upon her return to New Zealand in 2005, Corene founded a research company (Nutritional Medicine Ltd) which sees her developing natural, evidence-based formulations for a number of health conditions. Her company provides consultancy support to conventional and compounding pharmaceutical companies as well as natural health businesses in New Zealand and abroad.

Between 2006 and 2017, Corene authored chapters in several editions of the Textbook of Natural Medicine and Integrative Medicine (on Intestinal Permeability and Insulin Resistance and the Metabolic Syndrome respectively). In 2013, she coauthored a physician’s textbook on homeobotanical therapy.

Corene was a faculty member of South Pacific College of Natural Therapies and Wellpark College between 2011 and 2014, lecturing on the topics of medical microbiology and Functional Medicine. She is a current faculty member of CAM colleges in Australia and the USA where she lectures on botanical therapy, microbiology, gastroenterology and Functional Medicine. As an educator, she also mentors physicians around the world on functional diagnostic testing and integrative medicine.

In 2013, Corene Launched the Bio-Botanical Research range into the New Zealand and Australian markets. Her intimate knowledge of the efficacy of these products stemmed from her research in the US while developing GI profiles for Genova diagnostics.

“Functional medicine to me is the bridge between natural and conventional medicine – it brings the science to natural healing and allows us as practitioners to tailor health regimes to enhance clinical outcomes and help prevent chronic disease. Microbiology interfaces with this discipline beautifully as research continues to document the importance of host-microbe interactions in the role of health and disease.”
– Corene Humphreys
ND, BHSc, Dip Med Herb, Dip Hom, QTA

Product Quality and Manufacturing

Our products are formulated by and are designed for health professionals. All botanicals used in our formulations are of the highest USP grade quality, are tested for purity, and come with Certificates of Analysis. There are no synthetic fillers or additives used, and all products are hypo-allergenic and are free of artificial flavors and colorings. Vegi-caps are used rather than gelatin capsules in manufacturing all encapsulated products. Our manufacturing facilities are federally and state licensed to produce nutritional supplements and are certified to follow Good Manufacturing Practices (cGMP’s).

Product testing using American Association of Analytical Chemists (AOAC) methods are standard operating procedure. Independent laboratories are used to test for effectiveness and all products are tested in clinical usage by physicians before being added to our product line.

Customer Service

At Nutritional Medicine Ltd, we pride ourselves on a level of customer service that is reflective of the high standards of our products. Our orders department is available 9:00 - 5:00 New Zealand time Mon-Thurs, and from 9.00 - 2.00 on Fridays.

  • Our technical consultants are available to provide support to health professionals on usage and protocols by appointment.
  • If you are not a health care practitioner and need product information and usage assistance, we are happy to refer you to a practitioner to assist you by phone or in person.

Ordering Information

  • Online orders are for New Zealand, and Australia only. 
  • Once orders are processed we are not able to make changes, if you would like to purchase additional products please place another order.


Orders placed before 11.00am will be shipped the same day, using NZ Post, unless otherwise requested. Note we do not ship on weekends or public holidays.

  • There is no minimum order size and no additional charge for drop-shipments to patients.
  • We provide an email confirmation with your order, together with tracking details at time of shipping. Once the package shows delivery please contact the carrier directly for any lost or missing packages.
  • For orders outside of New Zealand, and Australia please contact us on info@biocidin.nz


  • Returns accepted on unopened product within 60 days of purchase, shipping costs are not refundable. Contact us by email info@biocidin.nz for authorization.
  • If you have purchased Bio-Botanical Research products through another party, such as an online store or doctor, contact them directly regarding returns.

Wholesale pricing is available only to licensed health care practitioners. Please contact us at NZ. Ph: 09 425 4250 / Aust. Ph: 001164 9 425 4250, or email info@biocidin.nz to establish a professional account.

Remove. Replace. Restore. Repair.

The Comprehensive Cleansing Program

In Functional Medicine, the 4 R’s of balancing microbiome ecology in the G.I. tract is considered the foundation to establishing overall health. Our Comprehensive Cleansing Program™ addresses the 4 R’s with specialized and synergistic formulations to provide a clinically effective, easy to use program.

Comprehensive Cleansing Program, Bio-Botanical Research

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