AllergoSan USA is a family-run business with a big mission. We believe that A Healthy Life Starts With A Healthy Gut; that long term health and vitality are built on a healthy digestive system.

We strive to educate about the critical role the gut and probiotics play in re-building and maintaining overall health and wellbeing. We provide the knowledge and tools so that our community can live a healthy and vital life.

Every team member is highly committed to this mission because we have personally experienced the powerful role of gut health, probiotics and especially OMNi-BiOTiC®.

With the support of Institut AllergoSan, our passionate founder Anita, and given our shared desire to help others achieve their highest level of health, we are well positioned and excited to bring OMNi-BiOTiC® to people across the U.S.

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Institut AllergoSan

Institut AllergoSan is a leading center for research and production of natural products that support the overall wellbeing of the human body by strengthening the gut. The center is committed to the belief that long-term health is built on a healthy digestive system. Headquartered in Graz, Austria, Institut AllergoSan has partnered with internationally recognized researchers in the fields of Medicine, Biology, Pharmacology and Biochemistry, and established itself as a hub for innovative solutions to complex health issues.

One of Institut AllergoSan’s most profound product lines, OMNi-BiOTiC®, is the #1 probiotic brand in Europe, as well as the #1 Over-the-Counter product in Austria and #2 in Germany.

Institut AllergoSan.  Gmeinstraße 13, 8055. Graz, Austria

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Mag. Anita Frauwallner

FOUNDER & CEO, Institut AllergoSan

Institut AllergoSan was founded in 1991. It was the brainchild of 20 doctors who were looking to create allergen-free foods, supplements and medicines for their patients who were suffering from chronic skin diseases like eczema and psoriasis. The doctors enlisted the help of a pharmacist named Friedrich Frauwallner, whose wife, Anita Frauwallner, would later take on the management of Institut AllergoSan. Through the Frauwallner’s work in their pharmacy, they observed how a holistic approach to health could help individuals who had been suffering from various illnesses for decades.

What started with a very successful skincare line, quickly shifted to a focus on the digestive system as the Frauwallners recognized the powerful role the gut plays in the health and wellbeing of the entire body. In 1993, Institut AllergoSan launched its first probiotic supplement. In 2001, Anita decided to focus solely on her work at Institut AllergoSan, and in 2006, her son, Bernd Assinger, joined the management team, which further boosted the growth of the center.

The hope is that one-day it will be possible to prevent the majority of disease with precautionary measures using natural products.

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A natural next step for Institut AllergoSan was its expansion into the United States of America. In September 2019, Institut AllergoSan formed a joint venture with former Fortune 500 CEO Klaus Kleinfeld to bring OMNi-BiOTiC® to the U.S.

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Klaus Kleinfeld

CEO, AllergoSan USA

Klaus and his family have been followers of natural medicine for many years. A doctor in Germany that Klaus holds in high regards introduced him to OMNi-BiOTiC®. Klaus immediately felt the overwhelmingly positive impact these probiotics have on his health. What especially caught his attention is that this doctor recommended a different OMNi-BiOTiC® to each member of his family. Wanting to learn more about these probiotics tailored to specific health goals, Klaus researched the company behind OMNi-BiOTiC® and reached out to Anita.

When Anita and Klaus met, they immediately connected, and stayed in touch, always playing with the idea of partnering to bring OMNi-BiOTiC® to the U.S. They both saw that there is a need and space for OMNi-BiOTiC® in the U.S. market given that there was no probiotic supplement available that adhered to the quality criteria that Institut AllergoSan had set for themselves when creating their products.

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Hannah Kleinfeld

COO, AllergoSan USA

When Klaus’ eldest daughter, Hannah, graduated from Harvard Business School and showed a deep interest in the health industry, the timing was perfect to introduce OMNi-BiOTiC® to the U.S. market. With Klaus leading the way, Hannah would help launch OMNi-BiOTiC® in the U.S.

Hannah was diagnosed with a serious case of Lyme disease in her early twenties and struggled to recover for three years. OMNi-BiOTiC® played a critical role in Hannah’s recovery as it majorly helped to rebuild her digestive system after several rounds of heavy antibiotics had damaged it. Living through Lyme disease showed Hannah the importance of continuously working to sustain health. She realized that it is her calling to work for a company that brings healing and long-term health to its community, and AllergoSan USA filled that desire.

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Lena Kleinfeld


The stars aligned once more when Klaus’ youngest daughter, Lena, also got involved in bringing OMNi-BiOTiC® to the U.S. When Klaus and Hannah were working on the launch plans for OMNi-BiOTiC®, they often approached Lena, who was working in Communications at a prominent film studio in Los Angeles at the time, for input on marketing and publicity opportunities. They knew that they needed someone to oversee their Communications efforts and Lena fit the position perfectly.

Lena had always felt a deep desire to work in the wellness space and was excited to help launch a product that she fully stood behind. Lena had personally experienced the profound effects of OMNi-BiOTiC® when a gut health reset program (recommended by Anita) had finally helped improve her chronic eczema.

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My mission in life is to create awareness about the critical role that billions of organisms play in our gut, which we define as probiotics. Probiotics means “pro life” and to me also stands for a healthy life. Probiotics are one of nature’s gifts that allow us to live a long life without lingering illness.

Mag. Anita Frauwallner
CEO & Founder of Institut AllergoSan

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