Yes, You Can Drink Too Much Kombucha. Here's What Might Happen If You Do - Tasting Table
Briefly

Kombucha moved from a niche beverage to a widely available fermented drink credited with aiding digestion and immunity. Recommended daily amounts vary, with the Cleveland Clinic suggesting 4 ounces and Healthline recommending 8 ounces. Most people can consume moderate amounts without major issues, but overconsumption may cause bloating, digestive discomfort, and caffeine-related symptoms such as anxiety, sweating, and poor sleep. Commercial kombucha often contains added sugar and consistent carbonation, increasing calories and sugar intake. Unpasteurized kombucha may pose risks for people advised to avoid unpasteurized foods. Drinking multiple glasses regularly can lead to unexpected calorie or sugar excess.
Flash forward to today, and kombucha is being touted as a superfood, with a long list of potential health benefits that range from better digestion to boosted immunity. The fermented beverage is available in practically every grocery store, an ingredient in innovative cocktails, and we all know at least one friend who's such a fan they make kombucha at home.
While kombucha's healthy properties are very real, recommendations for kombucha intake vary from the Cleveland Clinic's guideline of 4 ounces per day to Healthline's guideline of 8 ounces. Unless you've been told to avoid unpasteurized food, overconsumption of kombucha in a single day probably won't cause big problems - and this is true for most people. Bloating and digestive discomfort is possible, as are all the usual side effects of too much caffeine, like anxiety, sweating, and poor sleep.
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