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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryIndustryFood ProcessingZurichBio-Strath AG
Bio-Strath AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Bio-Strath AG produces dietary supplements based on fermented Strath herbal yeast and uses a fermentation and plasmolysis process to make nutrients bioavailable. Its product range includes liquid formulations and tablets for various needs, sold via pharmacies, drugstores and the company’s online shop. The company states it uses natural raw materials, follows GMP manufacturing standards and avoids preservatives, animal ingredients and GMOs.

AI-generated
Offering

Products & services

Industry:Food Processing
✓ Offered1
Dietary supplements based on Strath herbal yeast
Natural dietary supplements based on fermented herbal yeast; for people of all ages, with products for general well-being and specific needs.
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4.1/5

Bio-Strath AG

Trust & reputation

ranQ Trust Score of Bio-Strath AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

Bio-Strath AG scores 56.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.73.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.35.310%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Bio-Strath AG scores 92.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
Bio-Strath AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
Bio-Strath AG scores 66.7 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.33.34%
Qualifications+0.00

Bio-Strath AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Press

Media

June 30, 2026Media
Dorfleben Herrliberg: Bio-Strath feiert 65 Jahre Erfolgsgeschichte
tagesanzeiger.ch
May 3, 2024Media
Bio-Strath wird verkauft – bleibt aber in der Schweiz
tagesanzeiger.ch

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Location

Mühlebachstrasse 38
8008 Zurich

At a glance

Legal form
Corporation
UID
CHE-105.781.121
Founded
1961 · 65 years
Last commercial register change
June 15, 2026
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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