Related Experiment Video
Updated: Aug 4, 2026

10:40
Visualization and Analysis of Blood Flow and Oxygen Consumption in Hepatic Microcirculation: Application to an Acute Hepatitis Model
Published on: August 4, 2012
Acetominophen toxicity. Report of two cases
Oral Surgery, Oral Medicine, and Oral Pathology
|April 1, 1981
Summary
Acetaminophen overdose, even at therapeutic doses, can cause severe liver damage. Prompt treatment with N-acetyl-cysteine is crucial for preventing fatal outcomes and managing side effects.
Area of Science:
- Toxicology
- Hepatology
- Pharmacology
Background:
- Acetaminophen is a widely used analgesic and antipyretic.
- Therapeutic use and acute overdose of acetaminophen can lead to significant toxicity.
- Understanding acetaminophen's toxicological profile is critical for patient safety.
Observation:
- Both chronic low-dose and acute high-dose acetaminophen use can result in irreversible centrilobular hepatic necrosis.
- Even relatively small overdoses (7 Gm or 150 mg/kg) can cause severe liver injury.
- Potential side effects include methemoglobinemia, hemolysis, and prothrombin suppression.
Findings:
- Prompt administration of N-acetyl-cysteine following established protocols can prevent fatal outcomes from acetaminophen overdose.
- N-acetyl-cysteine is a highly effective antidote for acetaminophen-induced hepatotoxicity.
- Awareness of acetaminophen's diverse side effects is essential for healthcare providers.
Implications:
- Healthcare providers must be vigilant about acetaminophen dosage and potential toxicity.
- Early recognition and treatment of acetaminophen overdose with N-acetyl-cysteine can significantly improve patient prognosis.
- Further research into acetaminophen's long-term effects and alternative treatments may be warranted.
Related Concept Videos
Physical Properties of Amines
Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.
Drug Toxicity: Overview
Drug toxicity quantifies the harm a compound causes to an organism, varying by dose and potentially impacting whole systems or specific organs like the liver. Toxic reactions may arise from venomous insect or spider bites, with effects ranging from mild symptoms to severe outcomes such as brain damage or death. Common forms of acute poisoning include ethanol intoxication and overdose of pain or fever medications, with substances like GHB and heroin being particularly lethal at doses close to...
Drug Toxicity: Risk factors
Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
Drug Toxicity: Dose-Dependent Reactions
Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
Drug toxicity: Drug–Drug Interaction
Drug–drug interactions can precipitate toxicity through multiple mechanisms. Absorption interactions alter how drugs enter the body, exemplified when ranitidine increases the absorption of basic drugs, while cholestyramine decreases the levels of propranolol. Protein binding interactions occur when drugs share the same binding sites on plasma proteins. Drugs like aspirin and warfarin, when bound in excess, can lead to increased free drug concentrations, enhancing the potential for...
Pharmaceutical Poisoning: Potential Scenarios
Pharmaceutical poisoning can occur through various channels, impacting an estimated 2 million hospitalized patients in the U.S. annually with serious adverse drug responses. These scenarios encompass both therapeutic uses, such as drug toxicity, where even standard dosages can lead to severe central nervous system depression, and non-therapeutic exposures, including accidental ingestion by children, and environmental and occupational exposures.Unintentional poisonings often involve exploratory...

