The pro gnosis for weak acid injury to the upper digestive tract is good although large amounts can still cause ulcerative injury to the mucosa.

• 较大量的弱酸吞食仍会导致胃及食道之粘膜溃疡性伤害，出现临床症状，不过其预后仍然良好，不像强碱或强碱那样会造成非常严重之腐蚀性伤害。