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Where did it all begin?

Bio-Strath was formulated more than 50 years ago in Switzerland by a bio-chemist, Dr. Walter Strathmeyer.


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Dr Strathmeyer understood the body’s need for a bio-available nutritional supplement and after much research and development, finally perfected what we know as Bio-Strath.

Dr. Walther Strathmeyer


Fred Pestalozzi (1922 – 2014)

Fred Pestalozzi (1922 – 2014)

The merchant and sprout of the Pestalozzi iron and steel dynasty, Pestalozzi, Fred Pestalozzi (1922 – 2014), fell ill at a young age from Menière’s disease – attacks of dizziness and tinnitus (ringing in the ears). Then, quite by chance, he came across the concentrated herbal yeast preparation from Dr. Walter Strathmeyer. A few short months later, Fred was cured and raring to go.

He was delighted by this personal success and the many positive reports about the experiences of friends and family. Fred contacted Dr. Strathmeyer and they met – the start of a lasting friendship. Dr. Strathmeyer gifted Fred the recipe and the licence so to produce and market the natural herbal yeast-based food supplement.


In 1961, Fred Pestalozzi founded Bio-Strath AG in a two-room apartment on Zurich’s Langstrasse. In 1964, the company relocated to Herrliberg on Lake Zurich. The facility was extended to its present size in three construction stages.

Kitchen Lab

Fred Pestalozzi was guided throughout by the following four principles, which are still the mainstays of Bio-Strath AG today:


  • Preserving the natural state of the active substances
  • No addition of artificially produced substances
  • Natural preservation, no preservatives
  • Proof of efficacy using strict scientific criteria