dap·​sone ˈdap-ˌsōn How to pronounce dapsone (audio)
: an antimicrobial agent C12H12N2O2S used especially to treat leprosy and a chronic form of dermatitis

Examples of dapsone in a Sentence

Recent Examples on the Web The condition is treated using a multi-drug regimen that consists of different combinations of antibiotics, including the drugs dapsone, rifampin, and clofazimine. Erica Sweeney, Men's Health, 4 Aug. 2023 Instead, your dermatologist might prescribe a topical dapsone for hormonal acne at night. Madeleine Burry, Health, 30 June 2023 Talk to your dermatologist about topical dapsone cream or oral spironolactone. Noma Nazish, Forbes, 31 Mar. 2023 For non-hormonal acne flare-ups, topical treatments include antibiotics (such as dapsone or clindamycin), retinoids (such as tretinoin, tazarotene and adapalene), and newer combination products such as a benzoyl-peroxide-clindamycin preparation and a benzoyl-peroxide-tretinoin blend. Stacey Colino, Washington Post, 21 June 2022 One option your dermatologist might prescribe for acne is dapsone gel, such as the brand-name version Aczone. Sarah Jacoby, SELF, 27 Dec. 2021 Oftentimes dapsone is used alongside other acne treatments. Sarah Jacoby, SELF, 27 Dec. 2021 If dapsone doesn't help much, then patients might also use a topical hydrocortisone or lidocaine cream for relief, Dr. Burkhart says. Jessica Migala, Health.com, 7 June 2021 Sometimes, dapsone may need to be taken for one or two years, according to Dr. Alesci. Jessica Migala, Health.com, 7 June 2021 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'dapsone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


diamine + phenyl + sulfone

First Known Use

1952, in the meaning defined above

Time Traveler
The first known use of dapsone was in 1952

Dictionary Entries Near dapsone

Cite this Entry

“Dapsone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dapsone. Accessed 30 Sep. 2023.

Medical Definition


dap·​sone ˈdap-ˌsōn How to pronounce dapsone (audio) -ˌzōn How to pronounce dapsone (audio)
: an antimicrobial agent C12H12N2O2S taken orally to treat leprosy and dermatitis herpetiformis and topically to treat acne vulgaris

Note: Dapsone is marketed under the trademark Aczone.

called also diaminodiphenyl sulfone

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