Why do I feel weird after drinking kombucha?

Kombucha may cause Bloating and digestive discomfort. Probiotics: If you’re not used to consuming large quantities of probiotics, your gut may respond in rebellion at first. Introducing these new bacteria into your digestive system, while usually healthy in the long run, may upset your natural balance until your body gets used to regular kombucha consumption. Carbonation: Kombucha is often carbonated, which can cause bloating for those not used to drinking carbonated beverages. FODMAPs: Kombucha contains high levels of FODMAPs, which can cause digestive distress for some people. The fermentation caused by the gut bacteria feeding on these FODMAPs can result in gas and bloating. Caffeine and alcohol in kombucha can have side effects. Effects include jitters, nausea, nervousness, and digestive distress.