What happens if you swallow drano what will do to your insides?

Swallowing Drano, which contains caustic substances like sodium hydroxide, can cause severe chemical burns to the mouth, throat, esophagus, and stomach. This can lead to symptoms such as pain, vomiting, difficulty swallowing, and even internal bleeding. Immediate medical attention is critical, as the damage can be life-threatening and may require surgical intervention. If ingestion occurs, do not induce vomiting; seek emergency help right away.