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A member asked:

Last night lwhen sleeping l had pain behind my left breast, when l went to get up l burped and had a sour taste in my mouth. is this acid?

A doctor has provided 1 answer

Probably so: It was probably hydrochloric acid that ran up your esophagus while you were lying down and burped up when you stood up. If this persists have a MD check for a hiatal hernia. Avoid eating and lying down within two hours of a meal to help prevent this problem.

Answered 1/17/2018

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