It also helps lower oxidized LDL – the dangerous cholesterol that sticks to artery walls. But to see these results, you’d need to drink a cup of juice daily for 12 months – and its high sugar content can be a problem. Plus, not everyone’s gut can produce those beneficial urolithins.
4. L-Citrulline and L-Arginine: The Vasodilation Duo
These two amino acids support nitric oxide production. But there’s a catch – L-arginine alone breaks down too quickly to be effective, often causing digestive side effects. L-citrulline, on the other hand, converts into L-arginine gradually, creating a longer-lasting nitric oxide boost.
One study showed L-citrulline improved artery flexibility and lowered blood pressure in postmenopausal women in just four weeks. But you’d need several slices of watermelon daily to get enough.

5. Vitamin C: The Artery Protector
Vitamin C preserves nitric oxide and promotes collagen, keeping arteries strong and elastic. It also neutralizes harmful free radicals that damage blood vessels under stress.
Though citrus fruits provide some Vitamin C, much higher amounts are needed for heart protection than you’d get from an orange or two.
6. Grape Seed Extract: A Shield Against Plaque
Grape seed polyphenols defend the endothelium and support blood pressure regulation. In a clinical trial, middle-aged adults taking grape seed extract showed significant improvements in blood vessel function and blood pressure within 12 weeks.

Why Diet Alone Isn’t Enough
Together, these six nutrients — Vitamin K2 (MK-7), beetroot, pomegranate, L-citrulline/L-arginine, Vitamin C, and grape seed extract — form a powerful defense for your heart and arteries. They reduce plaque protein, boost nitric oxide, and keep your arteries flexible and healthy.
But relying on food to get effective amounts? Nearly impossible. You’d need large quantities of natto, beets, pomegranates, watermelon, citrus, and grape seeds every day.
The Easy Solution
That’s why a convenient daily supplement combining all six nutrients in optimal doses makes sense. Just one scoop a day delivers the clinical amounts proven to support cardiovascular health — without the hassle of complicated diets or unpleasant foods.