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
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Common antibiotics used to treat Lyme disease include doxycycline, amoxicillin, and cefuroxime.
—
Stephen Underwood, Hartford Courant, 9 Apr. 2026
These include quinolones such as Cipro (ciprofloxacin) and tetracyclines such as Doryx (doxycycline).
—Megan Nunn, Verywell Health, 8 Apr. 2026
Many patients are taking doxycycline or Accutane.
—Sophia Panych, Allure, 24 Feb. 2026
Taking magnesium with certain antibiotics, such as doxycycline and ciprofloxacin, can decrease the absorption of the antibiotic.
—Health, 22 Sep. 2025
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Stephen Underwood, Hartford Courant, 9 Apr. 2026
These include quinolones such as Cipro (ciprofloxacin) and tetracyclines such as Doryx (doxycycline).
—Megan Nunn, Verywell Health, 8 Apr. 2026
Many patients are taking doxycycline or Accutane.
—Sophia Panych, Allure, 24 Feb. 2026
Taking magnesium with certain antibiotics, such as doxycycline and ciprofloxacin, can decrease the absorption of the antibiotic.
—Health, 22 Sep. 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 22 Apr. 2026.
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
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