Hibiscus (Hibiscus sabdariffa) is a flowering shrub in the plant family of Malvaceae.
Other names: Jamaica sorrel, red sorrel, roselle, rozelle, sorrel
Classification

Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Malvales
Family: Malvaceae
Genus: Hibscus
Species: Hibiscus sabdariffa (and ~200 other species)
Description

Hibiscus (Hibiscus sabdariffa), also known as roselle, is a flowering shrub in the plant family of Malvaceae and is the commonly used species of hibiscus for tea. The calyces (or calyxes) are used which are the outer portion of the flower bud. The calyces are often referred to as hibiscus flowers in recipes and tea blends.
Traditional usage

This list reflects the "traditional usage" of hibiscus, which should be considered folklore unless supported by a scientific study. Studies, where available, are quoted and referenced. See the Disclaimer below.
Cholesterol / Heart Disease - a study at the Chung Shan University in Taiwan involving rats on high cholesterol diets demonstrated that an extract of the hibiscus flower significantly lowered cholesterol content in blood serum and prevented oxidation of LDL, "bad", cholesterol.
"Experiments have shown that compounds extracted from red wine and tea reduce cholesterol and lipid build-up in the arteries of rats.
"This is the first study to show that Hibiscus extract has the same effect."
- Dr. Chau-Jong Wang, lead researcher
Hypertension - in one study individuals with hypertension were given hibiscus tea once daily for 12 days. Members of the control group lowered their blood pressure by 11% versus 4% for the control group.
Liver Disorder - hibiscus is thought to help with liver disorders, though no studies to this effect have been done.
Ref: [2][3]
Side effects

No studies on the side effects of hibiscus usage have been reviewed.
Tea blends

Hibscus flowers can be used alone as a tea or blended with other herbals. Common blends include:
Hibiscus/Rose Hips - these herbs are often combined.
Note: the above combinations of herbs and their effects should be considered "folklore" and are not based on clinical studies. See the Disclaimer below.
Chemical makeup

This list of chemicals represents the calyx and flower
material only, where possible, and is not
comprehensive.
Acetic-acid
Aluminum
Anisaldehyde
Anthocyanins
Ascorbic-acid
Benzaldehyde
Benzyl-alcohol
Beta-Carotene
Butyric-acid
Calcium
Calcium-oxalate
Caprylic-acid
Carbohydrates
Chromium
Citric-acid
Cobalt
Cyanidin-3-sambubioside
Delphinin
Delphinidin
Delphinidin-3-glucoside
Delphinidin-3-sambubioside
Ethanol
Formic-acid
Glycolic-acid
Gossipetin
Gossypetin-3-glucoside
Hibiscetin
Hibiscic-acid
|
Hibiscin
Hibiscretin
Iron
Isoamyl-alcohol
Isopropyl-alcohol
Magnesium
Malic-acid
Manganese
Methanol
3-Methyl-1-butanol
Mucilage
Niacin
Oxalic-acid
Pectin
Pelargonic-acid
Potassium
Propionic-acid
Protocatechuic-acid
Resin
Riboflavin
Sabdaretin
Sabdaritrin
Selenium
Sucrose
Alpha-terpinyl-acetate
Thiamin
Utalonic-acid
Zinc
|
Ref: [1]
Learn more

PubMed - Clinical studies of Hibiscus sabdariffa
References

1. Duke, James A. Handbook of phytochemical
constituents of GRAS herbs and other economic
plants. 2000 Boca Raton, FL. CRC Press.
2. Chang-Che Chen, Fen-Pi Chou, Yung-Chyan Ho, Wea-Lung Lin, Chin-Pin Wang, Erl-Shyh Kao, An-Chung Huang and Chau-Jong Wang "Inhibitory effects of Hibiscus sabdariffa L extract on low-density lipoprotein oxidation and anti-heperlipidemia in fructose-fed and cholesterol-fed rats" Journal of the Science of Food and Agriculture Volume 84
3. Haji Faraji M, Haji Tarkhani A. "The effect of sour tea (Hibiscus sabdariffa) on essential hypertension." Journal Ethnopharmacol 1999;65:231-6.
Tags for this page:
heart high blood pressure herbal tea highbloodpressure