Do your legs often feel heavy, numb, or cold—especially after sitting for long periods? You stretch, you walk, maybe even massage them, but that sluggish, tingling sensation keeps coming back. You might think it’s just aging or lack of exercise. But what if the problem isn’t what you’re not getting—but what you’re taking too much of?

Surprisingly, some vitamins and supplements that are supposed to “boost circulation” could actually be doing the opposite. Yes, you read that right. While the right nutrients can help blood flow freely, others—when overused or imbalanced—can thicken your blood, tighten your vessels, or even interfere with oxygen delivery.

So before you reach for another multivitamin claiming to “support healthy circulation,” take a closer look. Because a few of those capsules could be silently working against your legs.

Why Leg Circulation Matters More Than You Realize
Your legs carry you through life—literally. They contain some of the body’s longest blood vessels, pumping oxygen-rich blood against gravity back to your heart. When circulation weakens, you might experience fatigue, swelling, or even varicose veins. Over time, poor blood flow can contribute to more serious issues like neuropathy or peripheral artery disease.