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Klaire Labs® was founded in 1969 by Claire Farr, whose primary goal was to provide nutritional support for individuals with severe food allergies and environmental sensitivities. Klaire Labs® developed some of the very first hypoallergenic nutritional supplements available, making Klaire Labs® an innovator in dairy-free probiotics and vegetarian enzymes for gastrointestinal support. An unwavering commitment to hypoallergenicity, product purity, and rigorous quality control has been the hallmark of the Klaire brand for more than 40 years. And having earned a strong reputation and brand recognition in the medical community, Klaire products continue to be the choice of physicians worldwide.

In 2004, Klaire Labs® was acquired by ProThera®, Inc., a nutritionally-focused healthcare company that specializes in nutraceutical formulation, research, and manufacturing. ProThera®, Inc. adopted the highly-respected Klaire Labs®brand as a source of probiotics, enzymes, and other specialty products. Visitwww.protherainc.com to learn more about Klaire’s parent company, place secure orders online, gain access to technical documents and resources, view product updates and company news, and sign up to receive a monthly newsletter.

Today, Klaire Labs® maintains its commitment to product purity and hypoallergenicity, offering an extensive selection of probiotics and enzymes for support of gastrointestinal health. By working closely with clinicians and researchers in the areas of intestinal dysbiosis, immune system dysregulation, and neurodevelopmental disorders, Klaire Labs® products have been carefully designed to assist gastrointestinal, neurological, detoxification, and immune system functions.


Klaire Labs® brand supplements have long been recognized as hypoallergenic nutraceuticals. While both ProThera® and Klaire Labs® brands of products avoid common allergens, Klaire Labs® has a 40 year history of specifically formulating products to be well-tolerated by even the most hypersensitive individuals. This product line is often the preferred choice for patients suffering from gastrointestinal problems, autism spectrum disorders, environmental sensitivities, and immune challenges. These products include dairy-free probiotics, prebiotics, enzymes, and other select nutrients. Learn more about Klaire’s hypoallergenic commitment.

Manufacturing Overview
Klaire Labs® brand nutraceuticals are produced in licensed manufacturing facilities that strictly adhere to current Good Manufacturing Practices (cGMP's). Products provided in tablet, capsule, and powder form are made in a manufacturing facility licensed by the State of California as a drug manufacturer and food processor and registered with the Food and Drug Administration as a drug manufacturing establishment. The facility is also approved by governmental agencies in the United Kingdom and the European Community (EC) to manufacture a drug product. Current GMP's and written standard operating procedures (SOP's) are strictly followed through all stages of production to produce products that meet or exceed United States Pharmacopeia (USP) standards.

Raw Material Specifications

Active ingredients used in Klaire Labs® brand products are selected based on their purity, bioavailability, documented actions, and safety characteristics. USP materials (i.e. those meeting USP standards) are used for those nutrients where this standard exists. Raw materials are purchased exclusively from reputable vendors who provide detailed Certificates of Analysis for every lot of material. These certificates certify that active components, toxic elements, and microbial content are within specified acceptable parameters. Purity and potency of selected raw materials are verified through independent testing laboratories by raw material vendors and ProThera®, Inc. All incoming raw materials undergo quarantine, inspection, and evaluation.

Quality Control Laboratory
On-site laboratory personnel evaluate physical characteristics of each finished product including hardness, disintegration, moisture balance, friability, and pH. Identity testing using infrared spectroscopy (FTIR) is performed on all incoming raw materials. Purity and potency of each finished product is independently verified through outside commercial laboratories.


Klaire Labs® brand products are free of artificial flavors, preservatives, and colorings. Naturally-derived, inert excipient materials, including cellulose-based excipients, vegetable-derived magnesium stearate, L-leucine, and silicon dioxide are used in very small amounts as tableting and encapsulation aids. Tableted products are protected with an inert, water-soluble cellulose coating that dissolves readily upon ingestion, thus facilitating tablet disintegration time. Vegetarian capsules made of plant cellulose are used exclusively for two-piece encapsulated products. Common allergens such as wheat, corn, soy, yeast, and dairy are avoided unless otherwise specified on the label.

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Before taking nutritional supplements, you should always seek guidance from your healthcare practitioner. These statements have not been evaluated by the Food and Drug Administration. These products selected are not intended to diagnose, treat, cure or prevent any disease.