Supplement analysis backed by scientific evidence · PT

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Moderate evidenceHeart & metabolic

Pomegranate Extract

Pomegranate consistently produces a small blood pressure reduction of a few mmHg in pooled trials. Claims about prostate cancer, atherosclerosis reversal and erectile function are not supported by adequate evidence.

What the science says

  • Lowers blood pressure Moderate evidence

    A 2017 meta-analysis of randomised controlled trials found pomegranate juice reduced systolic blood pressure by about 4.9 mmHg and diastolic by about 2.2 mmHg, with the systolic effect independent of dose and duration. A 2024 systematic review and meta-analysis of pomegranate consumption broadly confirmed a modest systolic reduction. Effects are small and clearest in people with elevated baseline pressure.

  • Slows prostate cancer PSA progression Limited evidence

    Early single-arm studies reported lengthened PSA doubling time, generating substantial hype. The subsequent randomised, placebo-controlled trial in men with rising PSA after primary therapy found no significant difference between pomegranate extract and placebo. The initial signal was almost certainly regression to the mean and lack of a control arm.

  • Improves endothelial function and carotid intima-media thickness Limited evidence

    A small Israeli study reported reduced carotid intima-media thickness over 1-3 years, but the trial was small, poorly controlled and never independently replicated. Larger endothelial-function trials have given mixed results.

  • Improves exercise performance Limited evidence

    A handful of small trials report improved blood flow and time to exhaustion with roughly 1,000 mg/day of extract, but sample sizes are typically under 20 and results conflict. Do not expect a nitrate-like ergogenic effect.

Dosage & safety

Studied doseBlood pressure trials used 150-500 mL/day of pomegranate juice or 500-1,500 mg/day of standardised extract (often standardised to 30-40% punicalagins or ~250 mg ellagic acid equivalents), for 2 weeks to 18 months. Juice delivers substantial sugar (roughly 30 g per 250 mL), which matters for anyone managing glucose or weight — extract avoids this. Effects on blood pressure appear within 2-4 weeks.
SafetyWell tolerated; mild gastrointestinal upset is the main complaint, and allergic reactions to pomegranate are rare but documented. Pomegranate juice inhibits intestinal CYP3A4 in vitro and has been reported to interact with statins, carbamazepine and ciclosporin, though the clinical significance appears smaller than with grapefruit. It may modestly potentiate antihypertensives and, given weak antiplatelet activity, warrants caution with warfarin — case reports of raised INR exist. The high sugar content of juice is a genuine consideration for people with diabetes. Standardised extracts have limited long-term safety data beyond 12 months.

Scientific references

Where to buy

Vitacost, Pomegranate Extract, 300 Capsules (250 mg per Capsule)

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