What pomegranate is
Pomegranate is an ancient fruit packed with jewel-red seeds called arils. The juice and extract are rich in punicalagins and other polyphenols, antioxidant compounds that give pomegranate its dark colour. Supplements are usually standardised to punicalagin content, while juice products vary widely in concentration.
How pomegranate works
Pomegranate polyphenols act as antioxidants and may relax blood vessels, in theory by raising nitric oxide. Some compounds also influence the way the body handles cholesterol and blood sugar in laboratory studies. These mechanisms together gave rise to the popular framing of pomegranate as a heart-health superfruit.
What the human research shows
A 2018 systematic review concluded that the limited evidence from clinical trials fails to convincingly show a beneficial effect of pomegranate on blood pressure. Across multiple trials, two showed significant reductions in systolic blood pressure, while three showed no significant differences.
Other trials suggest small improvements in inflammatory markers and antioxidant capacity, especially in older adults aged 55 to 70. We grade the overall human evidence as limited. Pomegranate is a nutritious fruit and its extracts are well tolerated, but the cardiovascular benefits in trials are smaller than the popular reputation suggests.
What we still do not know
- Whether higher-quality and longer trials would show a clearer blood pressure benefit.
- How the whole fruit, juice, and extract forms compare for any real benefit.
- Whether long-term pomegranate intake reduces actual cardiovascular events.
How people take pomegranate
Standardised extract at 200 mg to 1,000 mg per day or 200 mL to 250 mL of juice with meals fits most trials. Juice is high in sugar, so extract is the lower-calorie option. People on blood pressure, blood-thinning, or statin medicines should check with a healthcare provider before regular use.