Is chicken head rice toxic?

　　Under normal circumstances, chicken nut (Euryale ferox) has certain toxicity to the human body. The specific analysis is as follows:

　　Chicken nut is a commonly used traditional Chinese medicinal herb, but it is also a toxic plant. Its seeds and bark contain a toxic substance known as "euryalin," which is harmful to humans. Euryalin is a neurotoxin that can inhibit nerve conduction in the body, leading to symptoms of poisoning. The primary source of chicken nut's toxicity is this euryalin. Accidental ingestion may cause symptoms such as nausea, vomiting, diarrhea, dizziness, palpitations, pallor, and muscle weakness; in severe cases, it could even be life-threatening.

　　Therefore, extreme caution must be exercised when using chicken nut. It should only be used under the guidance of a licensed practitioner of traditional Chinese medicine and should never be taken indiscriminately. For safety, chicken nut must undergo processing to remove its toxins before use. Various processing methods exist, including boiling, stir-frying, and roasting. During processing, careful attention must be paid to temperature and duration to ensure complete destruction of the toxic components.