Orange juice is also a source of the antioxidant hesperidin. Peppermint contains terpenoids and flavonoids such as eriocitrin, hesperidin, and kaempferol 7-O-rutinoside. Venalex is a micronized purified flavonoid fraction containing 90% diosmin and 10% hesperidin. One review did not find evidence that hesperidin affected blood lipid levels or hypertension. Hesperidin is a flavanone glycoside found in citrus fruits. Hesperidin is believed to play a role in plant defense.