Acid reflux is worse at night for three reasons first, the concentration of acid in the stomach is higher at night second, in the lying position, it is easier for acid to reflux and to remain in the esophagus, gravity does not take the acid back down into the stomach third, while we are sleeping, we don't swallow. Is acid reflux in infants worse at night. Is acid reflux in infants worse at night heartburn symptoms (
