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AstaReal is now offering a superior yeast beta-glucan product. 

Contact our team to receive:

  • product documentation
  • study data
  • opportunity to request a sample

Yestimun® is a natural ingredient made only from brewers’ yeast, which is grown on malted barley, hops and water.

Yestimun® is an ingredient of highest quality made in Leiber GmbH’s own production facilities in Germany.

Yestimun® is an ingredient whose clinical efficiency has been proven in several own studies that demonstrate a significant reduction in common cold episodes during winter.

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