dextromethorphan: meaning, definition, pronunciation and examples
Technical/MedicalTechnical, Medical, Pharmaceutical
Quick answer
What does “dextromethorphan” mean?
An over-the-counter cough suppressant drug found in many cold and flu medications.
Audio
Pronunciation
Definition
Meaning and Definition
An over-the-counter cough suppressant drug found in many cold and flu medications.
A synthetic morphine derivative that acts as a central nervous system depressant, specifically targeting the cough reflex in the medulla oblongata. It is also sometimes used recreationally for its dissociative effects at high doses.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or use. Both regions use the same chemical name. Some brand names containing the drug may differ.
Connotations
Neutral pharmaceutical term in both. Recreational misuse carries negative connotations universally.
Frequency
Equally common in medical and pharmaceutical contexts in both regions. More likely to be abbreviated to 'DXM' in US informal contexts (e.g., online forums).
Grammar
How to Use “dextromethorphan” in a Sentence
Dextromethorphan is used to treat X.Y contains dextromethorphan.The doctor recommended a medicine with dextromethorphan.Abuse of dextromethorphan can cause Z.Vocabulary
Collocations
Examples
Examples of “dextromethorphan” in a Sentence
adjective
British English
- dextromethorphan-based remedy
- the dextromethorphan content
American English
- dextromethorphan-containing syrup
- a dextromethorphan-free formula
Usage
Meaning in Context
Business
In pharmaceutical business reports: 'The company's new cold remedy features a timed-release formulation of dextromethorphan.'
Academic
In pharmacology journals: 'The study examined the NMDA receptor antagonism properties of dextromethorphan.'
Everyday
In conversation: 'Check the label; you want a syrup that has dextromethorphan to stop the cough.'
Technical
In medical instructions: 'Contraindicated with MAO inhibitors; dextromethorphan may cause serotonin syndrome.'
Vocabulary
Synonyms of “dextromethorphan”
Strong
Neutral
Vocabulary
Antonyms of “dextromethorphan”
Watch out
Common Mistakes When Using “dextromethorphan”
- Misspelling as 'dextromethorpan', 'dextramethorphan', or 'dextromethorphine'.
- Incorrect pronunciation stressing 'methORphan' instead of 'METHorphan'.
- Using it as a countable noun (e.g., 'a dextromethorphan') instead of an uncountable substance name.
FAQ
Frequently Asked Questions
While it is chemically related to narcotics like morphine, it is classified as a non-narcotic cough suppressant for over-the-counter use in most countries. However, it can have abuse potential.
You must check with a doctor or pharmacist. It is dangerous to combine with MAO inhibitors, certain antidepressants (SSRIs, SNRIs), or other drugs that affect serotonin levels due to the risk of serotonin syndrome.
The prefix 'dextro-' refers to the dextrorotatory isomer of the compound, meaning it rotates plane-polarized light to the right. It distinguishes it from the levo- (left-rotating) form.
In doses far higher than the therapeutic range, it acts as a dissociative anesthetic, producing effects similar to ketamine or PCP, such as hallucinations, euphoria, and out-of-body sensations, leading to recreational misuse.
An over-the-counter cough suppressant drug found in many cold and flu medications.
Dextromethorphan is usually technical, medical, pharmaceutical in register.
Dextromethorphan: in British English it is pronounced /ˌdɛkstrə(ʊ)ˈmɛθɔːfæn/, and in American English it is pronounced /ˌdɛkstroʊˈmɛθərˌfæn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: DEXTER (right-handed, correct) + METHORPHAN (sounds like 'methorphan', relating to its chemical structure as a morphinan). It's the 'right-handed' isomer used to 'correct' a cough.
Conceptual Metaphor
A SHIELD/BLOCKER (for cough reflex).
Practice
Quiz
What is the primary therapeutic use of dextromethorphan?