Tag: Acute toxicity

It is estimated that drug toxicity contributes to the attrition of approximately one-third of drug candidates during development. Understanding the distinct types of toxicity is therefore crucial in pharmacology and medicine. This article breaks down **what are the 4 types of toxicity**, detailing how exposure duration and dosage define their effects on the body.

Acute toxicity describes the adverse effects that occur from a single exposure or multiple exposures to a substance within a short timeframe, typically less than 24 hours [1.2.2, 1.2.1]. Understanding what is considered acute toxicity is vital for chemical safety and pharmacology.

The U.S. Environmental Protection Agency (EPA) evaluates products like disinfectants and pesticides for acute toxicity, assigning them a category from I (most toxic) to IV (least toxic) [1.7.5]. So, **what is class 4 toxicity?** It represents the lowest level of acute toxicity, meaning a substance is considered practically non-toxic and not an irritant [1.2.2].