Swollen legs usually improve with a combination of elevation, compression, movement, and attention to what’s causing the fluid buildup in the first place. Most cases of bilateral (both legs) swelling stem from fluid retention triggered by prolonged sitting or standing, excess salt intake, medication side effects, or an underlying circulation problem. The right approach depends on whether you’re dealing with a temporary issue or something more persistent.
Elevate Your Legs Above Your Heart
The single most effective thing you can do right now is lie down and prop your legs up so they’re above the level of your heart. This lets gravity work in your favor, helping trapped fluid drain back toward your core. Aim for about 15 minutes per session, three to four times a day. Pillows stacked under your calves work, but a wedge pillow or the arm of a couch can make it easier to maintain the position comfortably.
Elevation works best as a habit, not a one-time fix. If your legs swell regularly by the end of the day, building these sessions into your routine (morning, midday, after work, before bed) can make a noticeable difference within a few days.
Use Compression Stockings
Compression stockings apply steady pressure to your legs, preventing fluid from pooling in your lower tissues. They come in different pressure levels measured in millimeters of mercury (mmHg). For mild, everyday swelling, stockings in the 8 to 15 mmHg range are usually enough. If you have minor varicose veins or more persistent swelling, the 15 to 20 mmHg range is a step up and is also commonly used to prevent blood clots during long flights or car rides.
Put them on first thing in the morning, before swelling has a chance to build up. If you wait until your legs are already puffy, they’ll be harder to get on and less effective. Knee-high stockings work for most people, but thigh-high or full pantyhose-style options exist for swelling that extends above the knee.
Cut Back on Salt
Sodium makes your body hold onto water. For people actively dealing with fluid retention, experts at Georgetown University’s nephrology division recommend keeping daily sodium intake between roughly 1,375 and 1,800 milligrams. That’s significantly less than the average intake, which for most adults hovers around 3,400 milligrams per day.
The biggest culprits are processed and packaged foods: canned soups, deli meats, frozen meals, soy sauce, and restaurant dishes. Cooking at home with fresh ingredients gives you the most control. Reading nutrition labels becomes important here, because sodium hides in foods that don’t taste particularly salty, like bread, condiments, and breakfast cereals. Even a moderate reduction, cutting your intake by a third, can reduce visible swelling within a week or two.
Stay Hydrated and Keep Moving
It sounds counterintuitive, but drinking enough water actually reduces fluid retention. When you’re dehydrated, your body compensates by holding onto more fluid in your tissues. Staying well-hydrated signals your kidneys to release excess water rather than store it.
Movement matters just as much. Your calf muscles act as a pump that pushes blood back up through your leg veins toward your heart. When you sit or stand in one position for hours, that pump stops working, and blood pools in your lower legs. Walking, even short loops around your home or office every 30 to 60 minutes, activates this calf pump and keeps circulation flowing. Ankle circles and calf raises while seated are useful alternatives when walking isn’t practical.
Why Legs Swell: The Valve Problem
Understanding the basic plumbing helps explain why some people deal with chronic swelling. Your leg veins contain a series of one-way valves that open to let blood flow upward toward the heart and close to prevent it from falling back down. When these valves weaken or become damaged, blood flows backward (a process called reflux), and pressure builds in the veins of your lower legs. That elevated pressure forces fluid out of the blood vessels and into the surrounding tissue, which is the swelling you see and feel.
This condition, called chronic venous insufficiency, gets worse with standing and walking because the calf muscles generate high pressures that, in healthy veins, push blood upward. But when valves are broken, those same pressures push blood backward into the superficial veins near the skin. The veins stretch, more valves fail, and the problem compounds over time. Previous blood clots are one of the most common reasons these deep vein valves become damaged in the first place.
Weak calf muscles make the situation worse because they can’t empty blood from the legs efficiently. This is why strengthening your calves through walking, heel raises, or gentle resistance exercises is a long-term strategy, not just a short-term fix.
Check Your Medications
Several common medications cause leg swelling as a side effect. The most frequent offenders are calcium channel blockers used for blood pressure, particularly amlodipine. Nearly half of people taking this class of drug experience some degree of foot and ankle swelling.
Other medications that can cause or worsen swelling include:
- Other blood pressure drugs: beta blockers, clonidine, and hydralazine
- Hormone medications: corticosteroids, estrogen, progesterone, and testosterone
- Pain relievers: NSAIDs like ibuprofen and naproxen
- Nerve pain and seizure drugs: gabapentin and pregabalin
- Diabetes medication: pioglitazone
- Certain antidepressants: MAO inhibitors
If your swelling started or worsened after beginning a new medication, that connection is worth raising with your prescriber. In many cases, switching to a different drug in the same class resolves the problem without sacrificing the benefit.
How to Gauge the Severity
A simple way to check how much fluid is in your legs: press your thumb firmly into the swollen area for a few seconds and release. If it leaves a visible dent that slowly fills back in, that’s called pitting edema, and the depth and recovery time tell you how severe it is.
A shallow 2-millimeter dent that bounces back immediately is Grade 1, the mildest form. A 3 to 4 millimeter pit that takes up to 15 seconds to refill is Grade 2. Grade 3 leaves a 5 to 6 millimeter indentation that takes up to a minute to recover. And Grade 4, the most severe, creates an 8-millimeter pit that can take two to three minutes to fill back in. Grades 1 and 2 often respond well to the home strategies above. Grades 3 and 4 typically signal something that needs medical evaluation, such as heart, kidney, or liver problems contributing to the fluid overload.
Warning Signs That Need Urgent Attention
Swelling in both legs is usually a gradual, manageable issue. Sudden swelling in one leg is a different situation entirely. A blood clot in a deep vein (DVT) typically causes swelling, pain, or cramping in just one leg, often starting in the calf. The skin over the area may feel warm to the touch and can turn red or purple. If you notice this combination of symptoms, especially after a long period of immobility like a flight, surgery, or bed rest, seek medical care promptly. DVT is treatable, but a clot that breaks loose and travels to the lungs becomes a life-threatening emergency.
Other signs that leg swelling needs professional evaluation include swelling that doesn’t improve after several days of elevation and compression, swelling accompanied by shortness of breath (which may indicate a heart issue), skin that looks stretched or shiny with weeping fluid, or swelling that leaves deep pits at Grade 3 or 4 severity.