Mehendale, Harihara (Hari) M., Ph.D.


Professor of Toxicology
Kitty DeGree Endowed Chair in Toxicology

College of Health and Pharmaceutical Sciences
Bienville Building 259
(318) 342-1691
Media Topics: 

Toxicology of drugs, poisons, pesticides and other chemicals
Drug and substance overdose
General toxicology
Liver toxicology: alcohol, Tylenol and over-the-counter drugs and prescription drugs
Pulmonary toxicology
Toxicology of single substances and combinations of chemicals

Speaker Topics: 

“What we need to know about Toxicology”; Toxicology is the “Science of Poisons”. It is any adverse health effect in our body either directly or indirectly through our environment. “All chemicals are poisonous. Only dose makes the difference” among them. We find safe ways of using chemicals for our benefit.
“Tylenol & Alcohol, a Forbidden Mix”; Acetaminophen (Tylenol) is one of the safest medications available over the counter today. Yet drug overdose can and does occur and is life-threatening. Many over the counter medications have this drug in different amounts and ‘overdose’ may occur because people may not realize this and lose track of how much acetaminophen they are taking before they are overdosed. Also, toxicity of this drug may escalate in individuals who regularly drink alcohol. In alcoholics, Tylenol toxicity is exacerbated.
“Toxicology Disasters: PCBs and Rice Oil”; Rice oil contaminated with polychlorinated biphenyls (PCBs) caused poisoning in people after consuming the tainted oil. Much damage had been done to human health before the freak incident was discovered.
“Industrial Disasters: FireMaster and FeedMaster” ; A Company manufactured both of these products sold in gunny sacks, marked “Feed Master and Fire Master”. Feed Master was supplied as a white powder of mineral nutrients to farmers to be mixed with animal feed. Fire Master, also a white powder, was supplied separately in gunny sacks for use as a fire retardant. People, who consumed the dairy, and meat products were poisoned. A mix-up in bagging the products led to many farmers getting the fire retardant in Feed Master bags. Hundreds of farm animals and thousands of fowl had to be destroyed in order to break the food chain.
“Industrial Disasters: The Kepone Disaster”; Over seventy workers in a manufacturing facility that produced, packaged, and shipped a pesticide, known as Kepone (chlordecone) were afflicted by neurotoxic symptoms and had to be hospitalized. The Plant was closed by EPA for negligent operation, but the pesticide had contaminated Chesapeake Bay and had to be closed for fishing.