isocarboxazid
C2Technical/Medical
Definition
Meaning
A specific hydrazine-derived monoamine oxidase inhibitor (MAOI) drug, formerly used as an antidepressant.
A pharmaceutical compound with the chemical name 5-methyl-3-isoxazolecarboxylic acid 2-benzylhydrazide, which functions by irreversibly inhibiting monoamine oxidase enzymes, thereby increasing concentrations of neurotransmitters like serotonin, norepinephrine, and dopamine in the brain.
Linguistics
Semantic Notes
This term exists solely as a pharmaceutical nomenclature. It has no other meanings, metaphorical uses, or cultural connotations. It is now primarily of historical medical interest, having been largely withdrawn from use due to the development of safer antidepressants with fewer dietary restrictions and side effects (e.g., hypertensive crisis).
Dialectal Variation
British vs American Usage
Differences
No lexical or spelling differences exist. Pronunciations may show minor variation.
Connotations
Identical technical, medical connotations in both varieties.
Frequency
Extremely low frequency in both British and American English, confined to historical medical texts, pharmacology, and psychiatric literature.
Vocabulary
Collocations
Grammar
Valency Patterns
The psychiatrist prescribed isocarboxazid.Isocarboxazid inhibits monoamine oxidase.Treatment involved isocarboxazid.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “N/A”
Usage
Context Usage
Business
N/A
Academic
Used in historical reviews of psychopharmacology, pharmacology textbooks, and papers on the evolution of antidepressant therapies.
Everyday
Virtually never used in everyday conversation.
Technical
Precise term in psychiatry, pharmacology, and medicinal chemistry for a specific, now largely obsolete, pharmaceutical agent.
Examples
By Part of Speech
verb
British English
- N/A
American English
- N/A
adverb
British English
- N/A
American English
- N/A
adjective
British English
- The isocarboxazid therapy was discontinued due to adverse effects.
- An isocarboxazid-like hydrazine structure was analysed.
American English
- The isocarboxazid treatment regimen required strict dietary compliance.
- Researchers studied the isocarboxazid metabolic pathway.
Examples
By CEFR Level
- N/A
- N/A
- Isocarboxazid is an old type of medicine for depression.
- Due to its severe dietary restrictions and risk of hypertensive crisis, the use of isocarboxazid has been superseded by newer antidepressants.
Learning
Memory Aids
Mnemonic
ISOCARBOXAZID: IS Our CARBOXYlic acid hydrAZIDe. Break it down: 'Iso-' (type of), '-carbox-' (carboxylic acid), '-azid' (hydrazide). Think of a specific chemical structure.
Conceptual Metaphor
N/A. The term is a literal technical label.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- It is not 'изокарбоксазид' as a direct transliteration in common use. The established Russian pharmaceutical term should be verified via medical literature; it may be 'изокарбоксазид' but is likely known by a trade name or simply as 'ингибитор МАО'.
Common Mistakes
- Misspelling: 'isocarbazoxid', 'isocarboxazide'.
- Mispronunciation: stressing the wrong syllable (e.g., isocarBOXazid).
- Confusing it with other MAOIs like phenelzine or tranylcypromine.
Practice
Quiz
Isocarboxazid primarily functions by:
FAQ
Frequently Asked Questions
Isocarboxazid is a monoamine oxidase inhibitor (MAOI) drug that was used as an antidepressant. It is a hydrazine derivative.
No. It is now considered a historical drug, largely withdrawn from the market due to the availability of safer antidepressants with fewer severe side effects and dietary interactions.
The main risk was a hypertensive crisis if patients consumed tyramine-rich foods (e.g., aged cheese, cured meats). It also had a risk of liver toxicity and other serious side effects.
Isocarboxazid works by broadly inhibiting the breakdown of several neurotransmitters (serotonin, norepinephrine, dopamine), whereas SSRIs selectively inhibit only serotonin reuptake. MAOIs like isocarboxazid have far more dangerous food and drug interactions.