Since cold brew is made with cold water, the acids present in coffee aren’t extracted. As such, the acidity of cold brew is much lower than conventionally brewed coffee or espresso. The high acidity in coffee is often what causes people to get heartburn or bloating, so using cold brew might make your symptoms less noticeable or disappear altogether. That said, cold brew has a higher amount of caffeine than traditionally brewed coffee, which can have deleterious effects on your digestive system. So, the answer is, it depends! You’ll have to give it a try to see whether your body responds with heartburn or bloating or not.