CurraNZ: Helping Your Heart Pump More With Less Effort

Every athlete wants a strong engine. Your heart and blood vessels are that engine - and research shows CurraNZ can help them work more efficiently, even when you’re off your feet.

In a study published in the European Journal of Applied Physiology, endurance‑trained male cyclists took New Zealand blackcurrant extract (CurraNZ) for seven days at different doses: 300 mg, 600 mg and 900 mg per day, compared with no supplement. On the final day of each block, they came into the lab, lay down, and had their cardiovascular function measured for 20 minutes using a beat‑to‑beat blood pressure monitor.

On the surface, nothing dramatic changed. Heart rate and standard blood pressure stayed the same. But under the hood, the picture was very different.

At 600–900 mg per day, CurraNZ:

• Increased cardiac output – the amount of blood pumped per minute – by up to 28%

• Increased stroke volume – blood per beat – by up to 18%

• Reduced total peripheral resistance – how “tight” your blood vessels are – by about 20%

In plain English, after a week of CurraNZ the heart was moving more blood with each beat, and the blood vessels offered less resistance to flow, all without raising heart rate. That combination means better circulation and a cardiovascular system primed to deliver oxygen and nutrients and clear waste products more effectively.

For athletes and active people, those changes matter. A more efficient heart and easier blood flow can support post‑exercise recovery, help you bounce back between sessions, and contribute to long‑term cardiovascular health. The study also suggests these blood‑flow‑boosting effects could be relevant to people with reduced circulation, although that still needs direct testing.

CurraNZ is already known for its performance, fat‑burning and recovery benefits. This research adds another layer: it helps your heart and blood vessels do their job more efficiently, so you can keep pushing your limits with confidence.