Headaches and migraines. This leads to a life threatening condition. Diarrhea: Kombucha contains caffeine. Two women who had admitted to the centre with severe acidosis had been drinking kombucha tea that they had made at home, daily for two months. In 1995 a report was submitted by the Centers for Disease Control and Prevention that acidosis from kombucha can lead to death. Digestive problems including upset stomach and allergic reactions are commonly reported side effects of Kombucha. Drinking too much kombucha can lead to yeast infections, gas and bloating, nausea and can potentially lead to bacteremia (when bacteria enters your bloodstream). Irritable bowel syndrome (IBS): Kombucha contains caffeine. Acidosis is the presence of abnormally high amounts of acid in the body. That’s because some brands of the drink are unpasteurized — and thus, you may end up … Overdoing It With Your Kombucha Habit May Lead to Headaches The caffeine in kombucha, especially when taken in large amounts, can worsen diarrhea. Some consumers may experience nausea, vomiting, and neck pain. Kombucha’s probiotics can also come with a downside. After admission one of them died without resp… Here’s a look at seven reported side effects of too much kombucha: 2. The side effects of Kombucha may outweigh any reported health benefits for some individuals. Fermented foods rich in probiotics – including yoghurt, sauerkraut and … Nausea is a common side effect of kombucha.