Elevating your feet above heart level for 15 minutes, three to four times a day, is the single most effective thing you can do to reduce swelling quickly. But if your feet swell regularly, lasting relief usually requires a combination of strategies: movement, dietary changes, compression, and figuring out what’s causing the fluid buildup in the first place.
Elevate Your Feet the Right Way
Gravity is working against you all day. When you stand or sit, fluid naturally pools in your lower legs and feet. Elevation reverses that flow. The key detail most people get wrong is height: your legs need to be above the level of your heart, not just propped on an ottoman. Lie on a couch or bed and stack pillows under your calves and ankles until your feet are higher than your chest.
Aim for about 15 minutes per session, three to four times throughout the day. Even a single session can provide noticeable relief, but consistency matters more than duration. If you work at a desk, try elevating during lunch and again when you get home.
Get Moving, Even a Little
Your calf muscles act as a pump for blood and fluid returning to your heart. When you sit or stand still for hours, that pump stalls and fluid collects in your feet. Walking for even five to ten minutes every hour can make a meaningful difference. Ankle circles and calf raises work too if you can’t leave your seat.
If your job keeps you on your feet all day, an anti-fatigue mat can help. These mats, often slightly sloped, encourage you to shift your weight constantly. That subtle movement stimulates blood circulation compared to standing on a flat, hard surface. Pairing a mat with supportive shoes gives your veins the best chance of moving fluid back up your legs efficiently.
Cut Back on Sodium
Salt is one of the biggest drivers of fluid retention. Your body holds onto water to keep its sodium concentration balanced, and that extra fluid often shows up first in your feet and ankles. Keeping your daily sodium intake under 2,000 mg can significantly reduce swelling for most people. That’s less than a single teaspoon of table salt.
The tricky part is that most excess sodium comes from processed and restaurant food, not the salt shaker. Canned soups, deli meats, frozen meals, soy sauce, and bread are common culprits. Reading nutrition labels and cooking more meals at home are the most practical ways to stay under that 2,000 mg target. You don’t need to eliminate salt entirely, just be aware of how fast it adds up.
Try Compression Socks
Compression stockings apply gentle, graduated pressure that’s tightest at your ankle and loosens as it moves up your calf. This helps push fluid upward and prevents it from pooling. They’re a cornerstone treatment for chronic venous disease, which affects over 25 million adults in the United States and is one of the most common causes of persistent foot and leg swelling.
You can buy mild compression socks (15 to 20 mmHg) over the counter at most pharmacies. Put them on first thing in the morning before swelling starts. If you wait until your feet are already puffy, they’ll be harder to get on and less effective. For stronger compression, you’ll need a prescription.
Soak in Epsom Salt
An Epsom salt foot soak won’t cure the underlying cause of swelling, but many people find it provides temporary relief and comfort. Add half a cup of Epsom salts to a basin of warm water. The Arthritis Foundation recommends keeping the temperature between 92°F and 100°F for the best results. Soak for 15 to 20 minutes. The warmth promotes circulation, and the magnesium in Epsom salt may help relax tight, achy tissues around swollen joints.
Consider Magnesium
Magnesium plays a role in fluid balance, and a deficiency can contribute to water retention. Cleveland Clinic physicians suggest that taking 200 to 400 mg of magnesium daily may help reduce swelling. You can get magnesium from supplements or from foods like spinach, almonds, avocados, and dark chocolate. If you have kidney problems, check with your doctor before adding a supplement, since your kidneys regulate how much magnesium stays in your body.
Check Your Medications
Some common prescriptions cause foot swelling as a side effect, and many people don’t make the connection. Calcium channel blockers, a widely prescribed class of blood pressure medication, are among the most frequent offenders. The swelling is dose-related: at lower doses, ankle puffiness occurs in 1 to 15% of patients, but at high long-term doses, the rate can exceed 80%.
Other medications that can cause fluid retention include certain diabetes drugs, steroids, hormone therapies (including estrogen and testosterone), and some antidepressants. If your swelling started or worsened after beginning a new medication, that’s worth bringing up at your next appointment. Switching to a different drug in the same class or adjusting the dose often resolves the problem.
When Swelling Signals Something Bigger
Most foot swelling is caused by standing too long, eating too much salt, or sitting through a long flight. But certain patterns warrant attention. Swelling in only one foot or leg, especially if it’s accompanied by warmth, redness, or pain in your calf, can signal a blood clot in a deep vein. That needs urgent evaluation.
Swelling in both feet that doesn’t go away with elevation can point to several underlying conditions. Heart failure causes fluid backup when the heart can’t pump efficiently. Kidney disease leads to swelling when the kidneys can’t clear excess fluid and protein. Liver disease and severe thyroid problems can also cause persistent puffiness in both legs. If your swelling is new, worsening, or accompanied by shortness of breath, rapid weight gain, or reduced urine output, those are signs the cause may be more than just a long day on your feet.
Chronic venous insufficiency is another common cause, particularly in people over 50 or those with a history of blood clots. The valves in your leg veins weaken over time, letting blood pool in your lower legs. Compression therapy is the first-line treatment, though procedures like vein ablation or sclerotherapy are options when conservative measures aren’t enough.