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Diet and Nutrition

What Is Kombucha — and Is It Healthy?

Lauren Smith, MABrian Clista, MD
Written by Lauren Smith, MA | Reviewed by Brian Clista, MD
Updated on September 11, 2025
Reviewed by Brian Clista, MD | September 11, 2025

Kombucha starts as any other sweet tea. Black or green tea is brewed and sugar is stirred in. Once cooled down, the tea is combined with a SCOBY, an acronym for the fungus that helps ferment the tea: Symbiotic Culture Of Bacteria and Yeast. The SCOBY is a circular biofilm that is pale in color, has a fleshy texture, and is creepily squishy. It’s similar to the “mother” that’s used to make vinegar (and in fact, kombucha tastes similar to a good-quality vinegar).

But the most important thing about the SCOBY is that it contains active cultures, which helps the tea ferment and gives kombucha its alleged probiotic content.

References

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Lauren Smith, MA
Written by:
Lauren Smith, MA
Lauren Smith, MA, has worked in health journalism since 2017. Before joining GoodRx, she was the senior health editor and writer for HealthiNation.
Brian Clista, MD
Reviewed by:
Brian Clista, MD
Dr. Clista is a board-certified pediatrician who works in private practice in Pittsburgh, Pennsylvania. He previously served as a National Health Service Corporation Scholar in the inner city of Pittsburgh for 11 years.

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