doxycycline
noun
doxy·cy·cline
ˌdäk-sə-ˈsī-ˌklēn 
: a broad-spectrum tetracycline antibiotic C22H24N2O8 used orally to treat various bacterial infections
Examples of doxycycline in a Sentence
Recent Examples on the Web
If they’re promptly diagnosed with and treated for Lyme—which generally means two to three weeks of the antibiotic doxycycline—the story often ends there.
—
Angela Haupt, Time, 18 June 2025
The oral antibiotic doxycycline is used for STI prevention.
—Benjamin Ryan, NBC News, 12 Nov. 2024
The man, meanwhile, finally received the proper course of antibiotics recommended by the CDC for brucellosis treatment, which was a combination of oral doxycycline and rifampin for six weeks.
—Ars Technica, 19 Mar. 2025
These can keep the body from absorbing doxycycline.
—Megan Nunn, Verywell Health, 22 Jan. 2025
See All Example Sentences for doxycycline
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Angela Haupt, Time, 18 June 2025
The oral antibiotic doxycycline is used for STI prevention.
—Benjamin Ryan, NBC News, 12 Nov. 2024
The man, meanwhile, finally received the proper course of antibiotics recommended by the CDC for brucellosis treatment, which was a combination of oral doxycycline and rifampin for six weeks.
—Ars Technica, 19 Mar. 2025
These can keep the body from absorbing doxycycline.
—Megan Nunn, Verywell Health, 22 Jan. 2025
See All Example Sentences for doxycycline
Cite this Entry
“Doxycycline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/doxycycline. Accessed 5 Jul. 2025.
Copy CitationMedical Definition
doxycycline
noun
doxy·cy·cline
ˌdäk-sə-ˈsī-ˌklēn
: a broad-spectrum tetracycline antibiotic C22H24N2O8 used orally to treat various bacterial infections
Love words? Need even more definitions?
Merriam-Webster unabridged
Share