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A pungent alkaloid, C18H27NO3, derived from certain capsicums that is a strong irritant to skin and mucous membranes and is used in some topical pain relievers and in pepper sprays.

[Alteration (perhaps influenced by Latin capsa, box) of earlier capsicin : capsic(um) + -in.]


(Biochemistry) a colourless crystalline bitter alkaloid found in capsicums and used as a flavouring in vinegar and pickles. Formula: C18H27O3N
[C19 capsicine, from capsicum + -ine2; modern form refashioned from Latin capsa box, case + -in]


(kæpˈseɪ ə sɪn)

a colorless, crystalline, bitter compound, C18H27NO3, present in capsicum.
[1885–90; earlier capsicine= capsic (um) + -ine2]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.capsaicin - colorless pungent crystalline compound derived from capsicum; source of the hotness of hot peppers of the genus Capsicum such as chili and cayenne and jalapeno
capsicum, capsicum pepper plant, pepper - any of various tropical plants of the genus Capsicum bearing peppers
chemical irritant - a substance producing irritation


n capsaicina
References in periodicals archive ?
Verdict: Capsaicin rated highly as a treatment because it's all-natural, safe to use and is readily available on prescription in the form of gel, cream and plasters.
Capsaicin is the same chemical that is used in pepper sprays.
You can find gels, ointments, and lotions containing capsaicin in drugstores and on the Internet.
In fact, TRPV1 is often called the capsaicin receptor.
Mice fed capsaicin were less likely to develop the cancer and their lifespans were 30 per cent longer.
Capsaicin is what makes chili peppers hot; capsaicin in a cream or skin patch helps relieve nerve pain.
8,821,920 B2; LTS Lohmann Therapie Systeme AG has patented a patch with a therapeutic compound-impermeable backing layer, a self-adhesive amine-resistant polysiloxane matrix consisting of: a therapeutic compound for treating neuropathic pain which contains about 5-10% by weight of capsaicin or a capsaicin analog or mixture thereof as the therapeutic compound, based on the total weight of the matrix; and diethylene glycol monoethyl ether (DGME) based on the total weight of the matrix.
While intermittent fasting-based diets might help some people to lose relatively small amounts of weight, and large amounts of capsaicin might eventually turn out to have some beneficial impact on the way the body metabolizes fat, these techniques will be only marginally useful to people who have large amounts of weight to lose.
In the second group of CCl4-treated mice, capsaicin prevented injury development in livers but did not reduce fibrosis when it was already established.
Topical capsacin for pain management: therapeutic potential and mechanisms of action of the new high-concentration capsaicin 8% patch.
Research is also looking at the possible weight loss benefits of capsaicin.