Hibiscus for Blood Pressure Regulation

Research suggests that hibiscus may have blood pressure-lowering potential, with evidence coming from a 2021 narrative review of medicinal plants that identified hibiscus among several botanicals with antihypertensive properties based on animal, human, and laboratory data, and a 2020 laboratory study that found hibiscus extract inhibited angiotensin-converting enzyme (ACE) activity by roughly 72–74%, a mechanism shared by commonly prescribed blood pressure medications. The laboratory study also used computational modeling to suggest that hibiscitrin, a compound found in hibiscus, may bind to the ACE enzyme with greater predicted affinity than the established drugs captopril and enalapril, though this finding has not yet been tested in animals or humans. The available evidence in this summary is limited to a general review and preliminary lab-based research, meaning the strength of the overall body of evidence remains modest and more rigorous human clinical trials would be needed to draw firm conclusions about hibiscus as a reliable intervention for blood pressure regulation. Studies indicate a generally supportive direction, but readers should be aware that laboratory findings and broad reviews do not always translate into confirmed effects in human populations.