Swollen feet usually respond well to a combination of elevation, movement, compression, and dietary changes. The right approach depends on whether your swelling is temporary (from standing all day, a long flight, or hot weather) or a recurring problem tied to an underlying condition. Most mild swelling improves within a few hours to a couple of days with consistent home treatment.
Elevate Your Feet Above Your Heart
Elevation is the simplest and most effective first step. Gravity pulls fluid downward throughout the day, and reversing that pull helps drain it back toward your core. The key detail most people miss: your feet need to be above the level of your heart, not just propped on an ottoman. Lying on a couch or bed with pillows stacked under your lower legs works well. If you can’t get your feet that high, resting them on a coffee table or footrest still helps by reducing the gravitational load, even if it’s slower.
Try to stay elevated for 20 to 30 minutes at a time, several times a day. Many people notice visible improvement after a single session, but consistent daily elevation is what keeps the swelling from returning.
Keep Your Feet Moving
Sitting or standing still for long stretches is one of the most common causes of foot swelling. Your calf muscles act as a pump that pushes blood and fluid back up toward your heart, and they only work when you move. Walking is ideal, but even small movements make a difference when you’re stuck at a desk or on a flight.
Ankle pumps are the go-to exercise. Sit or lie with your legs extended, then point your toes toward your knees as far as you can, then push them away from you. Keep alternating for two to three minutes, and repeat two to three times per hour. This rhythmic flexing activates the calf pump without requiring you to stand up. You might feel mild soreness at first, but stop if the movement increases your pain.
Use Compression to Prevent Fluid Buildup
Compression stockings apply steady pressure to your lower legs, preventing fluid from pooling in your feet and ankles. They come in different pressure levels measured in mmHg, and the right level depends on how severe your swelling is.
- 15 to 20 mmHg (mild): Good for occasional swelling from travel, standing, or early-stage fluid retention. Available over the counter at most pharmacies.
- 20 to 30 mmHg (moderate): The most commonly prescribed level for recurring lower-leg swelling. Often recommended after the swelling has been reduced and you need to maintain the improvement.
- 30 to 40 mmHg (firm): Used for more significant swelling, chronic venous problems, or cases where lighter compression isn’t enough.
- 40 to 50 mmHg and above: Reserved for severe cases with tissue changes, typically prescribed after a clinical assessment.
Put compression stockings on first thing in the morning before swelling accumulates. If you wrap your feet with an elastic bandage instead, avoid wrapping too tightly. Numbness, tingling, or increased pain means the wrap is cutting off circulation and needs to be loosened.
Cut Back on Sodium
Salt causes your body to hold onto water, and excess fluid often settles in the lowest points: your feet and ankles. Reducing sodium intake is one of the most effective long-term strategies for managing recurring swelling. Aim to keep your daily sodium below 2,000 mg, which is the threshold recommended for people with heart-related fluid retention. For context, the average American consumes over 3,400 mg per day, so this usually requires real changes.
Most excess sodium comes from processed and restaurant food, not the salt shaker. Canned soups, deli meats, frozen meals, bread, and condiments are the biggest contributors. Reading nutrition labels and cooking more meals at home are the most practical ways to get your intake down. Many people notice less swelling within a few days of cutting back.
Consider Magnesium Supplements
Magnesium plays a role in fluid balance, and some people with low levels retain more water in their extremities. Taking 200 to 400 mg of magnesium daily may help reduce swelling, according to Cleveland Clinic. This is most likely to help if your diet is low in magnesium-rich foods like leafy greens, nuts, seeds, and whole grains. If you have kidney disease or heart problems, check with your doctor before starting a supplement, since your kidneys regulate magnesium levels and extra supplementation can cause problems when kidney function is reduced.
Check Your Medications
Several common prescription drugs cause foot and ankle swelling as a side effect. If your swelling started or worsened after beginning a new medication, that connection is worth investigating. The most frequent culprits include:
- Blood pressure medications: Calcium channel blockers (especially amlodipine) are among the most common causes. Beta blockers and certain vasodilators can also contribute.
- Hormone therapies: Estrogen, progesterone, testosterone, and corticosteroids all promote fluid retention.
- Nerve pain and seizure medications: Gabapentin and pregabalin frequently cause swelling in the feet and ankles.
- Chemotherapy drugs: Several types used for cancer treatment can trigger significant edema.
Don’t stop taking a prescribed medication on your own. But if you suspect a connection, bring it up with your prescriber. In many cases, switching to a different drug in the same class resolves the swelling.
When Swelling Needs Medical Treatment
If home measures aren’t working after a week or two, or if your swelling is significant and persistent, a doctor may prescribe diuretics (water pills). These medications work by telling your kidneys to flush out extra salt and water through urine, which reduces the total volume of fluid your body is carrying. There are several types that work on different parts of the kidney, and your doctor will choose one based on how well your kidneys are functioning and whether you need to preserve potassium levels.
The underlying cause of your swelling matters more than the swelling itself. Heart failure, kidney disease, liver problems, and chronic venous insufficiency all cause fluid to accumulate in the feet, and each requires a different treatment approach. For venous insufficiency specifically, 2025 clinical guidelines recommend a stepped approach starting with compression therapy, potentially followed by procedures to treat malfunctioning veins if compression alone isn’t enough.
Red Flags That Need Urgent Attention
One detail that changes the urgency: whether the swelling is in one foot or both. Swelling in a single leg or foot, especially if it came on suddenly and is accompanied by pain, warmth, or redness, raises concern for a blood clot (deep vein thrombosis). This requires same-day medical evaluation, typically with an ultrasound of the leg. A blood clot that breaks loose can travel to the lungs, which is a life-threatening emergency.
Bilateral swelling (both feet) is more often related to systemic causes like heart, kidney, or liver issues, medication side effects, or simply prolonged sitting. It’s less likely to be a clot, though not impossible. Other warning signs that warrant prompt medical attention include swelling that leaves a deep dent when you press on it and it doesn’t bounce back for several seconds, swelling paired with shortness of breath or chest tightness, and skin that looks shiny, stretched, or discolored over the swollen area.