Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Poison
Medically reviewed by Min Clinic Staff | Updated: January 2026
Poison: Any substance that can cause severe organ damage or death if ingested, breathed in, injected into the body or absorbed through the skin. Many substances that normally cause no problems, including water and most vitamins, can be poisonous if taken in excessive quantity. Poison treatment depends on the 'substance.