Herb to Know: Heart-Healthy Hibiscus Sabdariffa

Known for its crimson beauty, this tropical native is gaining recognition as a go-to herb for heart health.


  • Hibiscus sabdariffa is also known as roselle, red sorrel, Jamaican sorrel, sour-sour and Florida cranberry.
    Photo by Swapan
  • With about 200 species and more than 5,000 hybrids associated with the genus, hibiscus can be had in a rainbow of colors. One common hibiscus, Hibiscus sabdariffa, is most often grown in warm temperate regions for its vibrant bell-shaped flowers.
    Photo by Steven Foster
  • Harvest hibiscus calyxes for heart-healthy tea.
    Photo by Lilyana Vynogradova
  • Hibiscus flowers don't immediately wilt after being harvested. This is why you can find hibiscus flowers decorating the hair as a part of classic island style.
    Photo by Juraj

Hibiscus sabdariffa
• Also known as roselle, red sorrel, Jamaican sorrel, sour-sour and Florida cranberry
• Hardy to Zone 10

Tropical paradises lush with colorful plant life are typically associated with hibiscus, a flower prized for its striking good looks. But did you know that this exotic plant’s utility extends far beyond its beauty? Hibiscus is a medicinal herb that has the potential to naturally lower blood pressure. 

With about 200 species and more than 5,000 hybrids associated with the genus, hibiscus can be had in a rainbow of colors. One common hibiscus, Hibiscus sabdariffa, is most often grown in warm temperate regions for its vibrant bell-shaped flowers. It can reach up to 8 feet in height and features crimson stems, lobed leaves with red veins, pale yellow flowers and a large red calyx. The calyx (a whorl of sepals), is largely responsible for hibiscus’ spicy flavor.

Hibiscus Health Benefits

In the kitchen, hibiscus is delicious when tossed into fruit salads, used to garnish ice cream, thrown into tart and pie fillings, and blended into jams and jellies. This nutritious plant even makes up a popular side dish when served with ground peanuts in regions of Africa. When steeped into an infusion, it’s transformed into a tart-tasting tea that is loaded with antioxidants and vitamin C. This tea is often sipped to relieve coughs and treat colds; it is also highly regarded as an appetite suppressant, a diuretic, a hangover reliever and a circulation booster. However, its most valuable benefit may be in its role for cardiovascular health. 



Recent studies show that hibiscus tea can naturally lower blood pressure as effectively as some standard hypertension drugs. This isn’t brand-new information, as hibiscus has been used to treat high blood pressure in both African and Asian traditional medicine. In a clinical trial performed in 2004 and published in the journal Phytomedicine, hibiscus tea lowered the blood pressure of people with hypertension. In fact, it was as effective as the popular prescription medication captopril.

Similarly, in a study presented to the American Heart Association in 2008, researchers found that drinking three cups of hibiscus tea a day lowered blood pressure by as much as 13.2 percent in pre- and mildly hypertensive adults. Researchers have a few possible explanations for this. Hibiscus is a natural diuretic, it opens the arteries, and it may act as a natural angiotensin-converting enzyme inhibitor, meaning that it slows the release of hormones that constrict blood vessels.

Jonh
7/29/2016 3:58:03 AM

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