Botanical
Hibiscus
Hibiscus teas and supplements usually use the red calyces of Hibiscus sabdariffa, a tropical plant also called roselle. It is mostly studied for blood pressure.
Also listed as Hibiscus Extract
Tea and capsules are not interchangeable
The tea trial tested a defined brewing regimen. Across the broader literature, preparations and their active-compound content differed, making it difficult to identify a single effective dose or assume that every tea bag matches an extract capsule. 1 2
Sources
- Hibiscus sabdariffa L. tea (tisane) lowers blood pressure in prehypertensive and mildly hypertensive adults Journal of Nutrition, 2010 · Study record