About Hibiscus
A calyx (Hibiscus sabdariffa) consumed as a tart tea. Meta-analyses of RCTs suggest a modest reduction in blood pressure, comparable to a mild antihypertensive effect. Most evidence is for the brewed tea rather than capsules.
What Hibiscus supports
- Studied for modest blood-pressure reduction
How much Hibiscus to take
The RDA prevents deficiency. The effective range is what clinical trials used to actually move the outcome.
Effective
250–1500
mg
BP trials often used hibiscus tea (~1.25-10 g dried calyx steeped); extract products vary.
Clinical evidence
Moderate clinical evidence. Meta-analyses show modest BP reduction (mostly as tea)
Examine.com