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Learn everything from the production to the effect of the products.
If you have any questions, please contact us.


Strath products are also available in pharmacies, drugstores and health food stores.

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Frequently Asked Questions

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Yes, Strath is suitable for children and is well tolerated. We recommend Strath Food supplement with vitamin D for children from 1 year of age. We recommend Strath tablets from 6 years of age.

Yes, Strath products are very well tolerated and can be taken during pregnancy and breastfeeding. We specifically recommend Strath Iron during pregnancy.

All Strath products in tablet form (Original, Vitality, Immune, Iron) are vegan.
Strath products in liquid form are free from animal ingredients but contain honey.

Yes, the sugar-free Strath tablets (Original, Vitality, Immune, Iron) can be taken if you have diabetes.

The Strath products in tablet form (Original, Vitality, Immune, Iron) as well as the Strath Convalescence Drops are gluten-free and are therefore also well tolerated by people with coeliac disease.
Strath Original liquid contains malt extract from barley, which contains gluten, and is therefore not suitable for coeliacs.

Yes, all Strath products are lactose-free.

All Strath products carry the kosher Parve label.
We have Strath products regularly checked by Rabbi I.M. Levinger, Basel.


We recommend a consumption period of 2-3 months.
If there is an increased requirement, it is also recommended to take it over a longer period of time and it is safe in any case.

Strath is generally very well tolerated. If you feel unwell after taking Strath, it is recommended that you stop taking the product for the time being and take it again at a later time in increasing doses. In this way, it can be determined whether the discomfort is related to taking Strath.

Yes, because Strath products contain digested (plasmolysed) yeast cells.
A valuable Saccharomyces cerevisiae yeast (baker's yeast type) is used to make the Strath preparations. In the special Strath process, the yeast cells are combined with selected herbs and then plasmolysed, i.e. liquefied or broken down, in a natural process. In our preparations, the yeast cells are therefore present in a digested form without exception. This opening process prevents independent life processes of the yeast. This makes infection from this side completley impossible. Flourishing intestinal bacteria help to prevent excessive invasion by foreign germs or to displace already spread pathogenic (disease-causing) germs in the intestine.

Strath herbal yeast regulates the appetite. If you suffer from a lack of appetite, e.g. after illness, Strath can have a positive effect on appetite. If you have a healthy appetite, increased appetite is not to be expected.

Product information

Strath consists of a specially produced herbal yeast and has a natural yeast taste. Strath Original liquid also tastes good in fruit juices, yoghurt or in breakfast cereals.
The natural yeast taste is toned down when mixed with other foods.

Strath Original, Strath Vitality, Strath Immune and Strath Iron tablets can be swallowed whole and are neutral in taste.

Strath Convalescent Drops, a filtrate of Strath herbal yeast, are neutral in taste.
They are taken diluted in a cold liquid.

All Strath products are absolutely free of artificial flavour enhancers.

The speciality of Strath is the fermented herbal yeast that forms the basis of all products. Yeast and herbs are natural sources of a wide range of nutrients. Vitamins, mineral salts, trace elements, amino acids and building substances are present in the herbal yeast in low doses and are not included in the recommended nutritional reference values (NRV). Exceptions are the quantities of iron, magnesium and zinc with which Strath Iron, Strath Vitality and Strath Immune are enriched.

A daily dose for adults of 15ml of Strath restorative contains 6 μg or 240 I.U. of vitamin D. The recommended daily amount of 15 ml can be taken long-term. There is no risk of overdose.

4 tablets of Strath Vitality contain 1.8 g herbal yeast and 187.5 mg magnesium.
4 tablets of Strath Vitality cover 50% of the recommended daily nutrient reference value of magnesium.

4 tablets of Strath Immun contain 1.8 g herbal yeast and 5 mg zinc.
4 tablets of Strath Immun cover 50% of the recommended daily nutrient reference value of zinc.

1 tablet of Strath Iron contains 14 mg of iron.
1 tablet of Strath Iron covers 100% of the recommended nutrient reference value of iron.

We recommend storing Strath Original liquid at room temperature or in the refrigerator and using it within 6 months after opening. When the bottle is closed, the product will keep at least until the expiry date printed on it.

Strath products have been manufactured in Switzerland since 1961.
Bio-Strath produces according to strict guidelines. Natural primary yeast cells of the type "Saccharomyces cerevisiae Meyen" are used for the production of Strath herbal yeast. In the unique Strath process, the yeast cells are combined with selected herbal extracts. These herbal extracts are absorbed and metabolised by the yeast cells. A natural, gentle fermentation process then opens the cell walls of the yeast (plasmolysis). The resulting unique plasmolysed herbal yeast forms the basis for all Strath products. Learn more


Strath is available in all health food stores, drugstores and pharmacies. Are you sitting comfortably on the sofa or are you on the road? No problem: Order our products right here in our online shop.

Strath products are available in 50 countries worldwide.
Find here more information on where Strath products are available abroad.