Surdosage

Surdosage is a term used to describe the administration of a drug or toxin at a level beyond the therapeutic dose, carrying an increased risk of toxicity and harm. In English-language medical literature, the word is uncommon, and the condition is typically referred to as an overdose. The concept, however, is widely recognized in toxicology and pharmacology as the result of taking too much of a substance, whether by mistake, misuse, or intentional action.

Etymology and usage: the word has cognates in several Romance languages. In French, surdosage (or sur-dosage) is the standard term for overdose, while in Portuguese and Spanish-speaking contexts similar terms exist that translate to excessive or dangerous dosing. In English, surdosage appears mainly in multilingual texts or translations and is not part of the core English medical vocabulary. The underlying idea is consistent with overdose: exposure levels exceed what the body can safely process.

Clinical aspects: surdosage can involve a wide range of substances, including prescription medications, over-the-counter drugs, and toxins. Presentation varies by agent and dose, from mild symptoms to severe organ dysfunction or death. Management typically requires prompt medical assessment, monitoring, and supportive care. Specific antidotes or decontamination strategies may be used when appropriate, such as naloxone for opioid surdosage or acetylcysteine for acetaminophen toxicity, alongside general measures like activated charcoal when indicated and within safe time windows.

Prevention focuses on safe prescribing, clear labeling, patient education, and proper storage to minimize accidental overdoses. See also overdose, toxicology, and poisoning.