High blood pressure, or hypertension, affects more than 25 per cent of all UK adults, according to the NHS.
Having too high blood pressure puts extra strain on blood vessels and vital organs.
It increases the risk of life-threatening complications, including heart attacks, strokes and vascular dementia.
But, drinking three cups of hibiscus tea everyday could lower your blood pressure, a study claimed.
Both systolic and diastolic blood pressure could be lowered by drinking hibiscus tea, according to US scientists.
A group of 65 adults drank either three cups of hibiscus tea, or a drink with no therapeutic effect at all, everyday for six weeks.
Hypertension was reduced in those drinking hibiscus tea, it was revealed.
The effect was greatest in those with higher systolic blood pressure to begin with.
“Hibiscus tea is loaded with antioxidants, including phenols and anthocyanin, which might explain the effect,” said Berkeley, University of California.
Nutritionist Dr Josh Axe added: “There are a few foods that lower blood pressure to take notice of, particularly if you are at risk for hypertension.
“Hibiscus tea makes that list with glowing reviews.”
The tea could also help to support healthy cholesterol, and may even fight leukaemia.
The only way of knowing if you have high blood pressure is to get it checked, the NHS said.
All adults over 40 should get their blood pressure checked at least every five years.
You can find out whether you have hypertension at your local GP, or at some pharmacies.
You can lower your risk of high blood pressure by cutting back on the amount of salt you eat, and by regularly exercising.