... at 302 C. Bioflavonoids are called phytochemicals, Vitamin P, and Vitamin C2. There are about 2000 known bioflavonoids including catechin ... , citrin, eriodictin, hesperetin, hesperidin, nobiletin, quercetin, rutin, sinensetin, and tangeretin. Vitamin P is not a dietary essential but is ... know to have pharmacological action as an anti-inflammatory ,antihistaminic and antiviral agent.