Hibiscus is caffeine-free rich in vitamin A & C and with substantial quantities of flavonoids & proanthocyanidins, act as a good anti-oxidant, it helps control cholesterol and thereby reduce the risk of heart disease. The antioxidants, such as flavonoids, polyphenolics & anthocyanins, contained in hibiscus play a large role in preventing the oxidation of LDL cholesterol (the bad cholesterol) & successfully lowers the blood cholesterol level.