30 Foods That Cause Acid Reflux
Pineapple Juice

While not as acidic as oranges, pineapple juice can still lead to acid reflux. However, the acidic concentration of whole pineapples is significantly less than in pineapple juice.
In addition to that, some scientists say that fresh pineapple may help improve acid symptoms due to the bromelain present. Pineapple juice has very little bromelain, so it's best to start eating the whole fruit instead.