The Power of Petals: Hibiscus (Sour Tea)

Hibiscus is a tasty and sour herb that is rich in antioxidants, offering potential health benefits for metabolism, blood pressure, cholesterol, and weight management.

Key Takeaways

Hibiscus Benefits

1. Antioxidant Content

The pigments in hibiscus, known as anthocyanins, contribute to its antioxidant properties, essential for counteracting harmful free radicals in our bodies.

2. Blood Pressure Regulation

Hibiscus effectively lowers blood pressure by acting as a diuretic and blocking certain enzymes that tighten blood vessels.

3. Cholesterol Management

Hibiscus contributes to cholesterol management through its anti-obesity properties and polyphenols. These compounds inhibit carbohydrate-breaking enzymes, potentially lowering blood sugar and calorie absorption.

4. Liver and Kidney Health Control

Hibiscus has shown potential in reducing damage from toxins and improving fatty liver disease. As for kidney health, hibiscus improves function by increasing urine volume and aiding in creatine removal. 

What is Hibiscus?

Hibiscus is a flowering plant with pink flowers and bright red sepals traditionally brewed into a refreshing tea.

This beverage is tasty with multiple health benefits, especially in treating sluggish metabolism, weight gain, and high blood pressure.

Some people consume the flower for its flavor and as a remedy for high blood pressure, anemia, liver diseases, and fever. [1]

The plant is also considered rich in antioxidants and has various other health benefits. It has cholesterol-lowering, antioxidant, antibacterial, anti-obesity, and liver- and kidney-protective effects.

Hibiscus Components

Hibiscus tea is made from the flower calyx protecting the newly-forming flower bud.

The plant contains many beneficial chemical compounds such as L-ascorbic acid (the purest form of vitamin C), anthocyanins and anthocyanidins (such as cyanidin-3 rutinoside and delphinidin), beta carotene (provitamin A), beta-sitosterol (a plant sterol with potential cholesterol-lowering effects), citric acid (an antioxidant), polyphenols (such as quercetin and gossypetin), pectin (a soluble fiber), alkaloids (that may help fight bacteria), sugars (such as galactose), wax, and fatty acids (linoleic and stearic acid) in the seeds. [2]

Hibiscus Benefits

1. Antioxidant Content

The pigments in hibiscus, known as anthocyanins, are likely responsible for its impressive antioxidant properties. Two principal pigments, delphinidin-sambubioside, and cyanidin-sambubioside, give the plant its pink or red color. [3]

Antioxidants are crucial to our health as they counteract harmful molecules called free radicals, which can damage our cells. The rich antioxidant content of hibiscus prevents the damage and diseases caused by free radicals buildup. 

One study has shown that hibiscus can lower oxidative stress and increase antioxidant levels in the blood, benefitting individuals with Marfan syndrome. [4]

2. Blood Pressure Regulation

Hibiscus lowers blood pressure in different ways. It acts as a diuretic, reducing blood volume, and it blocks the angiotensin-converting enzyme, which relaxes blood vessels.

Multiple studies have shown that hibiscus can effectively lower blood pressure, including a large-scale analysis of five studies with 390 participants. [5]

Additionally, hibiscus tea has performed well in lowering systolic and diastolic blood pressure in four clinical trials with over 200 people with mild to moderate high blood pressure. [6] [7] [8]

Extracts are likely to contain more bioactive compounds than tea. In one trial, a daily dose of dried hibiscus extract reduced high blood pressure in nearly 200 people. [9]

Hibiscus calyx, the leaf-like structures at the base of a hibiscus flower, has been studied as well, and its dried form can lower blood pressure similarly to drugs like captopril. [10]

3. Cholesterol Management

Hibiscus has anti-obesity properties that may be attributed, in part, to the presence of polyphenols in its extracts. These compounds are known to inhibit enzymes that break down carbohydrates, such as alpha-amylase, which could lead to reduced blood sugar levels and decreased absorption of calories from food.

Additionally, hibiscus antioxidants help neutralize high oxidative stress, which can contribute to obesity. Extracts also block the formation and buildup of fat cells. [3]

Hibiscus tea has reduced cholesterol levels. In one trial of 53 diabetic individuals, it increased the "good" HDL cholesterol and decreased triglycerides and total and LDL cholesterol. [11]

Additionally, combined with a healthy diet, hibiscus reduced triglyceride levels in a clinical trial of 51 individuals with metabolic syndrome and 73 healthy controls. [12]

4. Liver And Kidney Health Control

Hibiscus may have protective effects on the liver, potentially reducing damage caused by drugs and toxins or even improving overall liver health in disease. However, it is critical to follow the label on supplements and avoid megadoses, which may have the opposite effect.

In a clinical trial of 36 overweight individuals, a typical extract dosage taken three times daily improved fatty liver disease and reduced free fatty acid blood levels. [13]

The benefits of hibiscus for people at risk of metabolic diseases are not limited to the liver; they also extend to the kidneys. Its fluid-flushing, tissue-protecting, and blood sugar-lowering properties may all contribute to improved kidney health.

In a clinical trial involving 78 people with high blood pressure, an infusion of hibiscus powder improved kidney function by increasing urine volume and increased the removal of creatine, outperforming the common high blood pressure medication lisinopril. [14]

Safety And Side Effects

Hibiscus is non-toxic and well-tolerated with no side effects. Pregnant women should avoid it as it can induce labor. [15]


Hibiscus, a herb rich in antioxidants, has many potential health benefits for people struggling with slow metabolism or at risk of metabolic diseases. It may help lower blood pressure and fat levels. Consuming hibiscus as a tea or taking standardized extracts may result in the most benefits.

In addition to its various health benefits, hibiscus can assist with weight loss and reduce hunger. It's worth noting that it acts as a diuretic, so people should consult their doctors if taking prescription medications.

Additional Readings

You May Also Like

Valerian: A Natural Sleep And Relaxation Aid

Lavender: A Soothing Herb For The Mind And Body

Chamomile, The Gift Of Nature

Passionflower And Brain Health Benefits

Lemon Balm Benefits


[1]Effect of Hibiscus sabdariffaon blood pressure and electrolyte profile of mild to moderate hypertensive Nigerians: A comparative study with hydrochlorothiazide - PubMed (

[2]A review on phytochemistry and therapeutic uses of Hibiscus sabdariffa L - PubMed (

[3]Multi-Targeted Molecular Effects of Hibiscus sabdariffa Polyphenols: An Opportunity for a Global Approach to Obesity - PMC (

[4]Infusion of Hibiscus sabdariffa L. Modulates Oxidative Stress in Patients with Marfan Syndrome - PMC (

[5]Effect of sour tea (Hibiscus sabdariffa L.) on arterial hypertension: a systematic review and meta-analysis of randomized controlled trials - PubMed (

[6]Hibiscus sabdariffa L. tea (tisane) lowers blood pressure in prehypertensive and mildly hypertensive adults - PubMed (

[7]The effect of sour tea (Hibiscus sabdariffa) on essential hypertension - PubMed (

[8]Acute Effects of Hibiscus Sabdariffa Calyces on Postprandial Blood Pressure, Vascular Function, Blood Lipids, Biomarkers of Insulin Resistance and Inflammation in Humans - PubMed (

[9]Clinical effects produced by a standardized herbal medicinal product of Hibiscus sabdariffa on patients with hypertension. A randomized, double-blind, lisinopril-controlled clinical trial - PubMed (

[10]Effectiveness and tolerability of a standardized extract from Hibiscus sabdariffa in patients with mild to moderate hypertension: a controlled and randomized clinical trial - PubMed (

[11]Multi-Targeted Molecular Effects of Hibiscus sabdariffa Polyphenols: An Opportunity for a Global Approach to Obesity - PMC (

[11]Effects of sour tea (Hibiscus sabdariffa) on lipid profile and lipoproteins in patients with type II diabetes - PubMed (

[12]Effects of Hibiscus sabdariffa extract powder and preventive treatment (diet) on the lipid profiles of patients with metabolic syndrome (MeSy) - PubMed (

[13]Hibiscus sabdariffa extract inhibits obesity and fat accumulation, and improves liver steatosis in humans - PubMed (

[14]Does consumption of an aqueous extract of Hibscus sabdariffa affect renal function in subjects with mild to moderate hypertension? - PubMed (

[15]Maternity and medicinal plants in Vanuatu. I. The cycle of reproduction - PubMed (

Unstoppable Foundation

1% of your purchase is donated toward educating children and providing clean water.

†Statements made on this website have not been evaluated by the US Food and Drug Administration (FDA). These products are not intended to diagnose, treat, cure, or prevent any disease. Information provided by this website or this company is not a substitute for individual medical advice.

Quality Manufacturing

FDA-approved manufacturing facility. Brain Tea formulas are approved by Health Canada

Free Shipping

We offer free shipping on all US orders.

And worldwide for orders above $99.

Organic Ingredients

BrainTea is 100% organic.

Made in North America from the highest quality herbs and extracts.


A world-class support team that genuinely cares. Field experts that are happy to be of your service.
American Express Apple Pay Diners Club Discover Google Pay Mastercard Shop Pay Visa