The field of toxicology is the research and investigation of the properties, processes fatalities, effective dosage, recognition, evaluation, and deductive reasoning of the results of toxicological tests, in addition to the handling of poisons. Forensic toxicology focuses on the therapeutic and juridical consequences of contaminants' harmful effects on people. If a material penetrates into the human body or comes into contact with any portion of it, regardless of whether it is solid, liquid, or gaseous, it is deemed toxic. The local the surroundings, the body's structure, or both may have an impact on poisoning. Because even compounds that seem safe in little quantities can become lethal when taken in large quantities, and because toxins generated through bacteria aren't typically regarded as toxic substances, the concept of poison comes with an imprecise and inappropriate definition. Based on a forensic perspective, it is crucial to understand that there are two approaches taken in the criminal investigation of the poisoning case. In the first case, it's crucial to ascertain the kind of damage caused and the poison's consequences; in the second, on the other hand, it's critical to locate the perpetrator and ascertain their reasons. Poisoning may sometimes result in death, but it can also have long-term health implications on the victim. This suggests that law enforcement investigations into contamination are a very complex procedure involving experts spanning multiple disciplines.