Hibiscus Tea Benefits: Health Effects, Blood Pressure & When to Drink
Hibiscus is a genus of flowering plants comprising hundreds of species, but hibiscus tea is most commonly made up of dried calyces of the Hibiscus sabdariffa flower, also called roselle. Hibiscus sabdariffa is native to tropical Africa[1], and has been traditionally used in Egypt and Sudan as a restorative drink called Karkade[2].
At Austral Herbs, we offer hibiscus and roselle flowers crushed or powdered in 250g, 500g, 1kg, 5kg, and 10kg sizes. Research suggests that hibiscus tea may help lower blood pressure and improve cholesterol, though evidence for weight management is limited[3][4]. In this guide, we will go through what hibiscus is, how hibiscus tea is made, the best ways to prepare it, and what benefits it may offer.
Key Takeaways
- Hibiscus is a genus of flowering plants in the mallow family. It typically grows in warm, tropical temperatures.
- It is native to tropical Africa, and has been traditionally used as a restorative drink in Egypt and Sudan[2].
- Research suggests that hibiscus tea may help blood pressure, cholesterol and inflammation[3][5].
- Hibiscus tea can be drunk warm or cold, depending on your preferences[6][7].
- Austral Herbs offers dried hibiscus flowers as a certified organic product.
What Is Hibiscus?
Hibiscus is a genus of flowering plants in the mallow family (Malvaceae). The family is made up of hundreds of different flowers known for their large, trumpet shape. Hibiscus plants include herbaceous plants, small trees and shrubs. They thrive in tropical climates and typically have five or more petals in vibrant shades of different colours.
The hibiscus most commonly used for tea is the Hibiscus sabdariffa flower, also called roselle. Roselle is also used for jams and syrups in tropical African cultures. The tea is made from the flowers' calyces, an edible part of a flower that is used to protect the developing seed pod. Today, Hibiscus sabdariffa is known as rosella/roselle, and is grown around the world, including Australia[8].
Specifications & Characteristics
Available in certified organic quality, crushed or powdered, to suit your brewing and formulation needs.
Potential Benefits of Hibiscus Tea
Studies on hibiscus tea have suggested a number of potential benefits, including:
Blood Pressure
Studies have shown that regular consumption of hibiscus tea may help reduce both systolic and diastolic blood pressure[3].
Cholesterol and Blood Lipids
Some clinical studies have shown that hibiscus consumption may help improve lipid profiles by lowering low-density lipoprotein cholesterol[3][5].
Rich in Antioxidants
Hibiscus contains polyphenols and anthocyanins, which have shown antioxidant activity and may help protect cells from oxidative stress[9][10].
Liver Health
Some animal studies found that hibiscus may protect liver cells and reduce fat buildup[1].
Please note that much of this research is early, and hibiscus tea is not a substitute for medical treatment.
Hot vs Cold Hibiscus Tea: Which Is Better for You?
Both hot and cold hibiscus tea share many of the same qualities: they contain antioxidants, may help support healthy blood pressure and are caffeine-free. However, temperature changes how the tea extracts and tastes[6][7]:
How to Make Hot Hibiscus Tea
Hot hibiscus tea makes the flavour sharper, punchier and more tart due to rapid heat extraction[7].
To make hot hibiscus tea, you will need a mug or teapot, a strainer, one cup of water, and 2 to 3 heaped teaspoons of dried or powdered hibiscus. You may also want honey, sugar, a squeeze of lemon or mint to adjust the taste, depending on your preference.
- Place 2 to 3 heaped teaspoons of dried or powdered hibiscus into your mug, teapot, or infuser.
- Pour one cup (approx 250ml) of boiling water directly over the tea.
- Let it steep for 5 to 10 minutes, depending on how strong and tart you want the flavour to be.
- Pour the tea through a mesh strainer into your cup to separate the flowers or powder.
- Add your sweetener or flavourings of choice, such as honey, lemon, or mint.
- Serve hot and enjoy.
How to Make Cold Hibiscus Tea
Cold hibiscus tea takes longer to prepare, but can be more refreshing, sweeter and less tart. To make hibiscus iced tea, you will need a heatproof pitcher or jar, a fine mesh strainer, dried or powdered hibiscus, water, and your choice of sweetener or ice.
- Place the hibiscus in your heatproof container, using 2 to 3 heaped teaspoons for every cup (approx 250ml) of water, then pour boiling water over it.
- Let it steep for 10 to 15 minutes.
- Pour the mix through a mesh strainer into a pitcher or jug to remove the flowers.
- Add your sweetener of choice while the tea is still warm so it dissolves easily.
- Pour in cold water until you are satisfied with the taste.
- Refrigerate until cold.
- Fill a glass with ice, pour the chilled hibiscus on top, and serve.
To make karkade, a traditional North African drink made from hibiscus, simply add lime, sugar and mint after pouring the tea into your heatproof container. For more brewing ideas, see our guide to crafting teas with dried botanicals.
Who Should Not Drink Hibiscus Tea?
If you are concerned that drinking hibiscus may negatively affect you, please speak to a healthcare provider before consuming. People living with the following conditions may be negatively affected by drinking hibiscus tea:
- Pregnant/breastfeeding: Hibiscus may influence hormone levels, which may affect pregnancy and lactation. However, human safety data is lacking[11].
- Low blood sugar/diabetes: As hibiscus may lower blood sugar, drinking it could potentially interact with diabetes medication or cause light-headedness[5].
- Kidney stones: The tea may contain oxalates, which may interact with calcium oxalate kidney stones[12].
- Pre-surgery: It is standard to stop taking any herbs, including hibiscus, at least two weeks before surgery to reduce the risk of interactions with medications[13].
- Medications: Several drugs may not be compatible with hibiscus and its effects on blood pressure and blood sugar. These include medications used to treat malaria or high cholesterol[1][14].
Hibiscus at Austral Herbs
At Austral Herbs, we supply premium certified organic dried hibiscus (Hibiscus sabdariffa) sourced directly from trusted organic growers. Our roselle calyces are carefully cut into 10 to 20mm pieces to preserve the whole flower's vibrant ruby colour, tart flavour, and natural antioxidant profile[9]. We also offer hibiscus as a fine organic powder.
Whether you are brewing at home, crafting artisanal kombucha, or formulating custom herbal blends, we offer flexible bulk sizing to suit your needs. Our organic hibiscus is available in 250g, 500g, 1kg, 5kg, and 10kg sizes, making it ideal for both retail tea lovers and commercial business buyers. Every batch is 100% Certified Organic, non-GMO, and completely free from artificial additives or preservatives. Hibiscus also features in several of our ready-made organic tea blends, and sits within our wider dried flowers range.
Shop NowFrequently Asked Questions
Does hibiscus tea contain caffeine?
No, pure hibiscus tea is 100% naturally caffeine-free[13]. It is made from the dried calyces of the Hibiscus sabdariffa plant, not the Camellia sinensis tea plant, making it a great option for evening drinking or caffeine-sensitive individuals.
When is the best time to drink hibiscus tea?
You can enjoy hibiscus tea at any time of day as it is caffeine-free, and a warm cup in the evening makes a relaxing bedtime ritual. Hibiscus tea is naturally acidic[15], so drinking it with or after a meal may be gentler on your stomach, and rinsing with water afterwards can help protect your teeth. Avoid drinking it on an empty stomach if you are prone to acid reflux.
Can you drink hibiscus tea while intermittent fasting?
Plain hot or iced hibiscus tea without added sugar, honey, or milk contains virtually zero calories, so it is generally considered suitable during a fast. If you are fasting for a medical reason, check with your healthcare provider.
How should dried hibiscus flowers be stored, and how long do they last?
Store dried roselle calyces in an airtight container in a cool, dark, and dry place away from direct sunlight. When properly stored, high-quality organic dried hibiscus retains its flavour, vibrant colour, and antioxidant potency for up to 18 to 24 months.
Is it safe to drink hibiscus tea every day?
Yes, you can drink hibiscus tea every day, but be sure to stick to moderate amounts such as 1 to 3 cups per day[13]. Too much may affect your blood pressure or cause stomach discomfort[3][13].
Is hibiscus tea better for you than green tea?
Neither hibiscus nor green tea is inherently ‘better’ for you, as each offers different potential benefits depending on your specific goal.
Hibiscus tea has clinical evidence suggesting it may help lower blood pressure and improve cholesterol[3][5]. It is also caffeine-free and rich in anthocyanins, antioxidant compounds studied for their ability to help protect blood vessels from cellular damage[9].
Green tea, on the other hand, is a caffeinated drink that contains catechins that potentially improve working memory, attentiveness, and overall cognitive health.
Does hibiscus tea reduce belly fat?
There is no clinical proof that hibiscus tea directly reduces belly fat or affects body mass index[4].
What not to mix with hibiscus tea?
To avoid affecting the unique flavour profile of hibiscus tea, don’t mix it with the following:
- Dairy: Milk or cream may negatively affect the tea's more refreshing taste.
- Alcohol: Mixing alcohol and hibiscus may affect the tea's signature taste, and may cause dehydration and strain cardiovascular health.
- Excessive sugar: Too much sugar or sweetener will cancel out the natural health benefits of the tea and throw off the taste.
Can you combine hibiscus with coffee?
Yes, you can mix hibiscus with coffee for a tart, fruity but bold drink. Hibiscus can be steeped into a cold brew, added as a shot of tea to a latte, or brewed directly together for a Japanese-style flash brew.
References
- Phytochemical, pharmacological and toxicological aspects of Hibiscus sabdariffa L.: a review, 2005. https://pubmed.ncbi.nlm.nih.gov/16106391/
- Antibacterial efficiency of the Sudanese Roselle (Hibiscus sabdariffa L.), a famous beverage from Sudanese folk medicine, 2016. https://pmc.ncbi.nlm.nih.gov/articles/PMC4835995/
- A systematic review and meta-analysis of the effects of Hibiscus sabdariffa on blood pressure and cardiometabolic markers, 2022. https://pmc.ncbi.nlm.nih.gov/articles/PMC9086798/
- Clinical effects of Hibiscus sabdariffa Linn. on obesity treatment: A systematic review and meta-analysis of randomized controlled trials, 2024. https://pubmed.ncbi.nlm.nih.gov/38878905/
- Acute Effects of Hibiscus sabdariffa Calyces on Postprandial Blood Pressure, Vascular Function, Blood Lipids, Biomarkers of Insulin Resistance and Inflammation in Humans, 2019. https://pmc.ncbi.nlm.nih.gov/articles/PMC6412462/
- A Comparative Study of the Antihypertensive and Cardioprotective Potentials of Hot and Cold Aqueous Extracts of Hibiscus sabdariffa L. in Relation to Their Metabolic Profiles, 2022. https://pmc.ncbi.nlm.nih.gov/articles/PMC8905494/
- Physicochemical and phytochemical properties of cold and hot water extraction from Hibiscus sabdariffa, 2011. https://pubmed.ncbi.nlm.nih.gov/21535810/
- Genome assembly of Hibiscus sabdariffa L. provides insights into metabolisms of medicinal natural products, 2024. https://pmc.ncbi.nlm.nih.gov/articles/PMC11304979/
- Comparative Study on the Chemical Profile, Antioxidant Activity, and Enzyme Inhibition Capacity of Red and White Hibiscus sabdariffa Variety Calyces, 2023. https://pmc.ncbi.nlm.nih.gov/articles/PMC10652262/
- Consumption of Hibiscus sabdariffa L. aqueous extract and its impact on systemic antioxidant potential in healthy subjects, 2012. https://pubmed.ncbi.nlm.nih.gov/22331521/
- Genomic and Cytotoxic Damage in Wistar Rats and Their Newborns After Transplacental Exposure to Hibiscus sabdariffa Hydroalcoholic Extract, 2025. https://pmc.ncbi.nlm.nih.gov/articles/PMC12347892/
- Uricosuric effect of Roselle (Hibiscus sabdariffa) in normal and renal-stone former subjects, 2008. https://pubmed.ncbi.nlm.nih.gov/18423919/
- Benefits of Hibiscus, Cleveland Clinic, 2022. https://health.clevelandclinic.org/benefits-of-hibiscus
- Pharmacokinetic Herb-Drug Interaction between Hibiscus sabdariffa Calyces Aqueous Extract and Captopril in Rats, 2020. https://pmc.ncbi.nlm.nih.gov/articles/PMC7317316/
- Erosive potential of vitamin waters, herbal drinks, carbonated soft drinks, and fruit juices on human teeth: An in vitro investigation, 2023. https://pmc.ncbi.nlm.nih.gov/articles/PMC10676538/
Disclaimer: The information provided on this page is for educational and informational purposes only and is not intended as medical advice. Any references to traditional or historical uses are for context only and do not represent any therapeutic health claims for the products supplied by Austral Herbs.
Austral Herbs supplies ingredients only and does not claim that any products are intended to diagnose, treat, cure, or prevent any disease. Customers should consult a qualified healthcare professional before using any ingredients, particularly if pregnant, breastfeeding, taking medication, or managing a medical condition.
Customers are responsible for ensuring that any finished products manufactured, marketed, or supplied using these ingredients comply with all applicable Australian laws and regulations, including those administered by the Therapeutic Goods Administration (TGA) and relevant food standards legislation.
