Editing Openai/68f254dc-1570-8004-ab56-efe884c7e623 (section)

==== - Multiple human trials have shown that consumption of hibiscus tea (or extracts) leads to modest reductions in systolic and diastolic blood pressure in prehypertensive or mildly hypertensive adults. For example, a 6-week trial found systolic BP dropped ~7.2 mmHg vs ~1.3 mmHg in control groups. ScienceDirect<ref>{{cite web|title=ScienceDirect|url=https://www.sciencedirect.com/science/article/pii/S0022316622069632|publisher=sciencedirect.com|access-date=2025-11-17}}</ref> ====
* Systematic reviews / meta-analyses confirm a modest but consistent BP-lowering effect, though not always matching pharmaceutical ACE inhibitors in strength. PMC<ref>{{cite web|title=PMC|url=https://pmc.ncbi.nlm.nih.gov/articles/PMC9086798/|publisher=pmc.ncbi.nlm.nih.gov|access-date=2025-11-17}}</ref>
* In one meta-analysis, hibiscus was less effective than ramipril (an ACE inhibitor) in lowering systolic BP but had similar effects on diastolic BP in certain trials. PMC<ref>{{cite web|title=PMC|url=https://pmc.ncbi.nlm.nih.gov/articles/PMC9086798/|publisher=pmc.ncbi.nlm.nih.gov|access-date=2025-11-17}}</ref>
* Another point: in some studies, consumption of 10 g of hibiscus produced reductions in BP comparable in magnitude to certain antihypertensive drugs (in some trial settings) PMC<ref>{{cite web|title=PMC|url=https://pmc.ncbi.nlm.nih.gov/articles/PMC9086798/|publisher=pmc.ncbi.nlm.nih.gov|access-date=2025-11-17}}</ref>
* Importantly, responses depend on baseline BP: individuals with higher initial BP tend to see a greater reduction. ScienceDirect<ref>{{cite web|title=ScienceDirect|url=https://www.sciencedirect.com/science/article/pii/S0022316622069632|publisher=sciencedirect.com|access-date=2025-11-17}}</ref>