ex·​cip·​i·​ent ik-ˈsi-pē-ənt How to pronounce excipient (audio)
: a usually inert substance (such as gum arabic or starch) that forms a vehicle (as for a drug)

Examples of excipient in a Sentence

Recent Examples on the Web Third, regulatory agencies should provide guidance for excipient reporting, facilitating greater transparency about excipient use and supply source. Popular Science, 15 Sep. 2020 As the investigation proceeded, agents found that Warren had purchased more than two dozen kilograms of excipient — an inactive binder used in pill production — in different colors, including blue, white and yellow, the office said. Dallas News, 10 Feb. 2023 Delight in an additive-free, gluten-free, wheat-free, corn-free, soy-free, and dairy-free supplement that is devoid of artificial fillers, binders, or excipients. Amber Smith, Discover Magazine, 12 June 2023 The company has been providing development, scale-up and manufacturing services at a number of its global research and development as well as production sites, showing flexibility and expertise to deliver lipid excipient supply, according to a news release by the company in February. Laura Cooper, WSJ, 11 Dec. 2021 In the following months, agents found that Martinez-Otero, 28, and Rodriguez, 39, also bought several kilograms of excipient. Dallas News, 10 Feb. 2023 The lipid excipient surrounds and protects the active ingredient in the vaccine. Laura Cooper, WSJ, 11 Dec. 2021 Between 2015 to 2019, health-care professionals, patients, and manufacturers filed nearly 2,500 reports to the FDA about an adverse reaction to an excipient. Popular Science, 15 Sep. 2020 But their problems are a bit of a medical mystery, because Merck hasn't changed the active ingredient in Levothyrox; what's new are the excipients, ingredients that help stabilize and bulk up the drug. Yves Sciama, Science | AAAS, 27 Sep. 2017 See More

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

Word History


Latin excipient-, excipiens, present participle of excipere to take out, take up — more at except

First Known Use

circa 1753, in the meaning defined above

Time Traveler
The first known use of excipient was circa 1753

Dictionary Entries Near excipient

Cite this Entry

“Excipient.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/excipient. Accessed 5 Dec. 2023.

Medical Definition


ex·​cip·​i·​ent ik-ˈsip-ē-ənt How to pronounce excipient (audio)
: a usually inert substance (as gum arabic, syrup, lanolin, or starch) that forms a vehicle (as for a drug or antigen)
especially : one that in the presence of sufficient liquid gives a medicated mixture the adhesive quality needed for the preparation of pills or tablets
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