Elevating your feet above heart level is the fastest way to move trapped fluid out of swollen feet, and doing it for just 15 minutes can make a noticeable difference. But getting the swelling down for good depends on what’s causing it. Most foot swelling comes from fluid pooling in your tissues after long periods of standing, sitting, eating too much salt, or as a side effect of medication. Here’s how to tackle it from every angle.
Elevate Your Feet the Right Way
The simplest fix is also one of the most effective. Lie down and prop your feet up so they’re above the level of your heart. This lets gravity work in your favor, pulling fluid out of your feet and back toward your core. Aim for about 15 minutes per session, three to four times a day. A stack of pillows, the arm of a couch, or a wedge cushion all work. The key detail most people miss: your feet need to be higher than your chest, not just slightly raised on an ottoman while you sit in a recliner.
Try an Epsom Salt Soak
Soaking swollen feet in warm water with Epsom salt is a popular home remedy, and there’s some clinical support behind it. A study on pregnant women with foot swelling found that soaking in lukewarm Epsom salt water for 20 minutes a day over three days reduced swelling by about 74%, outperforming foot exercises alone. The ratio used was roughly 30 grams (about two tablespoons) of Epsom salt per liter of water. The warm water itself helps improve circulation, and the magnesium sulfate in the salt may assist with drawing out excess fluid through the skin.
This works best for everyday, non-medical swelling. If your feet are swollen due to an underlying condition like heart failure or a blood clot, a soak won’t address the root cause.
Use Compression Socks
Compression socks apply steady pressure to your lower legs and feet, preventing fluid from settling into your tissues. They come in different pressure levels measured in mmHg, and the right level depends on how much swelling you’re dealing with.
- 15 to 20 mmHg (mild): Good for minor swelling from travel, long days on your feet, or mild fluid retention. Available without a prescription at most pharmacies.
- 20 to 30 mmHg (moderate): The most commonly prescribed level for people with recurring lower leg swelling. Often available over the counter but sometimes recommended by a provider.
- 30 to 40 mmHg (firm): Used for more significant swelling or chronic vein problems. These typically require a fitting and clinical guidance.
Put compression socks on first thing in the morning, before swelling starts. They’re much harder to get on once your feet are already puffy, and they work better as prevention than as a fix after the fact.
Cut Back on Sodium
Salt is one of the biggest dietary drivers of fluid retention. When you eat more sodium than your body needs, your kidneys hold onto extra water to keep your blood chemistry balanced, and that water tends to settle in your feet and ankles. Most health guidelines recommend keeping sodium under 2,000 to 2,300 milligrams per day. For people already dealing with significant fluid retention, the American Heart Association suggests staying at or below 2,000 milligrams.
The tricky part is that most excess sodium doesn’t come from the salt shaker. It’s hidden in processed foods, restaurant meals, canned soups, deli meats, and condiments. Reading labels and cooking more meals at home are the two changes that make the biggest dent. Even a modest reduction, going from 4,000 milligrams a day down to 2,500, can produce a noticeable drop in swelling within a few days.
Stay Hydrated (It Helps, Not Hurts)
It sounds counterintuitive to drink more water when your body is already holding too much fluid, but dehydration actually makes swelling worse. When your body senses it’s low on water, it triggers hormonal signals that tell your kidneys to hold onto sodium and reduce urine output. Your kidneys essentially go into conservation mode, retaining every bit of fluid they can.
Drinking enough water does the opposite. It tells your kidneys that conditions are safe, suppresses the hormones responsible for sodium retention (particularly aldosterone), and allows your body to flush excess sodium more efficiently. Think of it less like filling an already full bathtub and more like resetting a thermostat. For most people, six to eight glasses a day is a reasonable target, though your needs vary with activity level and climate.
Move Your Feet and Ankles
Your calf muscles act as a pump for your veins, squeezing blood and fluid back up toward your heart with every step. When you sit or stand still for hours, that pump shuts off and fluid pools in your feet. Even small movements help. Flex your feet up and down, roll your ankles in circles, or take a short walk every 30 to 60 minutes if you’re desk-bound or traveling.
If you’re on a long flight or road trip, this is especially important. The combination of sitting still, cabin pressure, and mild dehydration makes foot swelling almost inevitable. Getting up to walk the aisle, doing calf raises while standing, or simply pumping your feet while seated can reduce swelling significantly.
Check Your Medications
Foot swelling is a common side effect of several widely used medications. Blood pressure drugs, particularly a type of calcium channel blocker, are among the most frequent culprits. They work by relaxing blood vessels, but this can increase fluid pressure in the tiny capillaries of your lower legs, pushing fluid into surrounding tissue. Other medications known to cause foot swelling include pain relievers like ibuprofen and naproxen, steroids, certain diabetes drugs, some antipsychotics, and insulin.
If your swelling started or worsened after beginning a new medication, that’s worth flagging with your prescriber. In many cases there are alternative drugs that don’t cause the same fluid retention. Never stop a prescribed medication on your own, but knowing the connection gives you a useful question to bring to your next appointment.
When Swelling Signals Something Bigger
Most foot swelling is harmless and temporary. But certain patterns point to conditions that need medical attention.
Swelling in Only One Foot
When just one foot or leg swells up, especially if it’s also warm, tender, or discolored (red or purple), the concern is a deep vein thrombosis, or blood clot. This can happen after surgery, long travel, or periods of immobility. DVT sometimes causes cramping or soreness that starts in the calf, but it can also develop without obvious symptoms. One-sided swelling that comes on suddenly warrants prompt medical evaluation.
Chronic Swelling That Won’t Resolve
If your feet stay swollen despite elevation, compression, and dietary changes, you may be dealing with chronic venous insufficiency. This happens when the one-way valves inside your leg veins become damaged, allowing blood to flow backward and pool in your lower legs. Over time, the increased pressure can burst tiny capillaries, cause skin discoloration, and even lead to open sores. In advanced cases, the calf can develop scar tissue that traps fluid permanently, making the lower leg feel firm and hard to the touch.
How Severity Is Measured
If you visit a provider about swelling, they’ll likely press a finger into the puffy area and watch what happens. This is called pitting edema, and it’s graded on a four-point scale. Grade 1 leaves a tiny 2-millimeter dent that bounces back immediately. Grade 2 creates a slightly deeper pit that takes up to 15 seconds to refill. Grade 3 produces a 5 to 6 millimeter indent that takes up to a minute to rebound. Grade 4, the most severe, leaves an 8-millimeter pit that can take two to three minutes to fill back in. Grades 3 and 4 typically signal a systemic issue like heart, kidney, or liver problems rather than simple fluid retention from standing too long.