Poor circulation in the legs and feet is one of those conditions that creeps into a person’s life quietly, almost politely at first, before slowly becoming a daily frustration. Many people begin noticing subtle changes—feet that feel colder than usual, toes that tingle, calves that tighten or cramp during simple activities.

Others realize something is wrong only after swelling appears or after long days leave their legs heavy and fatigued. These symptoms, though mild in the beginning, are often early warnings of deeper issues: narrowed arteries, sluggish blood flow, or the body’s inability to efficiently deliver oxygen and nutrients to tissues. Medical conditions such as peripheral artery disease (PAD), diabetes, and chronic venous insufficiency often sit at the root of these problems.

A sedentary lifestyle, smoking, or long hours spent sitting or standing can also restrict circulation over time. While medical treatment and lifestyle changes are essential, the role of nutritional support—especially vitamins—has grown increasingly recognized by researchers and clinicians alike. Among these nutrients, Vitamin B3, known as niacin, stands out as one of the most powerful and effective options for improving circulation in the legs and feet..