How to Pronounce Trimethoprim-sulfamethoxazole
Definition, meaning, and phonetic spelling
Trimethoprim-sulfamethoxazole Pronunciation
try-METH-oh-prim sul-fa-meth-OK-sa-zole
Stressed syllable in ALL CAPS · hyphens separate syllables
Syllable Breakdown
try
METH
stress here
oh
prim sul
fa
meth
OK
stress here
sa
zole
9 syllables
What is Trimethoprim-sulfamethoxazole?
Co-trimoxazole (a combination of sulfamethoxazole and trimethoprim) is used to treat certain infections that are caused by bacteria. It also is used to treat 'travelers' diarrhea. Co-trimoxazole is in a class of medications called sulfonamides. It works by stopping the growth of bacteria. Antibiotics will not work to kill viruses.
Definition sourced from MedlinePlus, National Library of Medicine
Questions About Trimethoprim-sulfamethoxazole
How do you pronounce trimethoprim-sulfamethoxazole?
+
Trimethoprim-sulfamethoxazole is pronounced try-METH-oh-prim sul-fa-meth-OK-sa-zole. The stress falls on the second syllable of the first part (METH) and the third syllable of the second part (OK). It's a long word, so saying it in two parts—trimethoprim, then sulfamethoxazole—can make it easier.
How many syllables does trimethoprim-sulfamethoxazole have?
+
Trimethoprim-sulfamethoxazole has 9 syllables total: tri-METH-oh-prim (4) and sul-fa-meth-OK-sa-zole (5). Breaking it into these two medication names helps you count and pronounce each part more clearly.
What is the most common mispronunciation of this word?
+
People often stress the wrong syllables, saying try-meth-OH-prim instead of try-METH-oh-prim, or sul-fa-meth-ox-a-ZOLE instead of sul-fa-meth-OK-sa-zole. Remembering that METH and OK are the stressed syllables will help you say it correctly.
Is there a shorter way to say or write trimethoprim-sulfamethoxazole?
+
Yes, this medication is often shortened to TMP-SMX or TMP-SMZ in medical writing and conversation. You would say the letters individually: T-M-P dash S-M-X.
Can you break trimethoprim-sulfamethoxazole into smaller parts to make it easier to say?
+
Absolutely! Say it as two separate medication names: first say "trimethoprim" (try-METH-oh-prim), pause, then say "sulfamethoxazole" (sul-fa-meth-OK-sa-zole). This approach makes the long name much less overwhelming to pronounce.
How would you use trimethoprim-sulfamethoxazole in a sentence?
+
You might hear a healthcare provider say: "The patient was prescribed trimethoprim-sulfamethoxazole for their infection." Or in a shorter form: "The doctor recommended TMP-SMX for treatment."
Why is this word so long and hard to pronounce?
+
Trimethoprim-sulfamethoxazole is actually two different medications combined into one name, which is why it's so lengthy. Medical medication names often have multiple syllables because they're made up of chemical components, making them challenging to say out loud.

