If it is lime water prepared from edible gypsum powder (raw gypsum powder, also known as tofu powder), it is harmless to the body. Edible gypsum powder is mainly used as an additive for bean products (such as making tofu).

Note: The arsenic content in edible gypsum powder is strictly limited, otherwise people who eat tofu with excessive arsenic content will have different degrees of nausea, vomiting, gastrointestinal discomfort and other symptoms, and even lead to arsenic poisoning leading to greater lesions.