Swollen feet and ankles usually respond well to a few straightforward strategies: elevating your legs, wearing compression socks, moving more, and cutting back on salt. Most cases stem from fluid pooling in your lower extremities after long periods of sitting or standing, and the swelling resolves once you help that fluid drain back toward your heart. But swelling can also signal something more serious, so knowing the difference matters.
Elevate, Ice, and Rest
The single most effective thing you can do right now is lie down and prop your feet above heart level. This uses gravity to move trapped fluid out of your ankles and back into circulation. Stack pillows under your calves while lying on a couch or bed so your feet sit higher than your chest. Even 15 to 20 minutes in this position can make a noticeable difference, and doing it several times a day keeps the swelling from rebuilding.
If the area feels warm or tender, apply an ice pack wrapped in a thin towel for 10 to 20 minutes every hour or two. Don’t place ice directly on your skin. Cold narrows blood vessels and slows the flow of fluid into swollen tissue, which helps with both puffiness and discomfort.
Try Compression Socks
Compression socks apply gentle, graduated pressure that pushes fluid upward out of your feet and ankles. They come in different pressure levels measured in mmHg. For mild, occasional swelling from travel or standing all day, a light pair in the 8 to 15 mmHg range is usually enough. If your swelling is more persistent or moderate, 15 to 20 mmHg socks are the most commonly recommended level for daily wear. You can find both over the counter at most pharmacies.
Put them on first thing in the morning before swelling has a chance to set in. They’re harder to pull on over already-swollen ankles, and they work best as prevention rather than treatment after the fact.
Move Your Feet and Ankles
Sitting or standing in one position lets fluid settle into your lower legs. Your calf muscles act as a pump for your veins, squeezing blood back up toward your heart every time they contract. When you’re not moving, that pump shuts off.
If you can’t get up and walk, ankle pumps are a simple alternative. Point your toes down as far as you can, then pull them up toward your shin as far as you can. Hold each position for about a second, and repeat roughly 30 times per minute for a few minutes at a time. This mimics the effect of walking and significantly improves blood flow out of your lower legs. You can do these at your desk, on a plane, or in bed. Even a short walk every 30 to 60 minutes makes a meaningful difference if you spend most of the day seated.
Cut Back on Sodium
Sodium makes your body hold onto water, and that extra fluid often shows up first in your feet and ankles. The World Health Organization recommends staying under 2,000 mg of sodium per day, which is just under a teaspoon of table salt. Most people consume well above that, largely from processed and restaurant foods rather than the salt shaker.
Canned soups, deli meats, frozen meals, soy sauce, and fast food are some of the biggest sources. Swapping these for fresh or home-cooked alternatives can reduce fluid retention noticeably within a few days. Reading nutrition labels is the fastest way to spot high-sodium foods you might not suspect.
Stay Hydrated
It sounds counterintuitive, but drinking more water can actually reduce swelling. When you’re chronically under-hydrated, your kidneys compensate by retaining more fluid, which expands your overall body fluid volume. Research published in the European Journal of Nutrition found that people with consistently concentrated urine (a sign of low fluid intake) carried larger body fluid volumes than those who drank more water. Staying well hydrated signals your kidneys that they can safely let go of excess fluid rather than hoarding it.
Check Your Medications
Several common medication types cause ankle swelling as a side effect. Calcium channel blockers, widely prescribed for high blood pressure, are one of the most frequent culprits. They relax blood vessels unevenly, increasing pressure inside tiny capillaries and pushing fluid into surrounding tissue. The effect is dose-dependent, meaning higher doses cause more swelling.
Other medications linked to foot and ankle swelling include pain relievers like ibuprofen and naproxen (NSAIDs), steroids, certain diabetes medications, nerve pain drugs like gabapentin and pregabalin, some antipsychotics, and even ACE inhibitors. NSAIDs cause the kidneys to retain sodium and water, while steroids do something similar through a different pathway. If your swelling started or worsened after beginning a new medication, that connection is worth raising with whoever prescribed it. Don’t stop a medication on your own, but knowing it might be the cause can change the approach to treatment.
When Swelling Points to Something Bigger
Not all swelling is harmless. Pay attention to whether the swelling affects one leg or both, how quickly it appeared, and what other symptoms come with it.
Swelling in just one leg, especially if it came on suddenly within the last day or two and is accompanied by pain, warmth, or redness in your calf, raises concern for a blood clot (deep vein thrombosis). This needs medical attention quickly. One-sided swelling that develops more gradually could point to a vein problem, lymphatic issue, or even compression from something in the pelvis or abdomen.
Swelling in both legs is more likely tied to a whole-body issue. Heart failure, kidney disease, liver problems, and thyroid disorders can all cause bilateral ankle swelling that worsens over the course of the day. If your swelling comes with shortness of breath, chest tightness, or you notice it spreading above your knees, these are signs the underlying cause needs investigation. Chronic swelling lasting more than three months in both legs, particularly alongside weight gain or fatigue, deserves a medical workup even if it doesn’t feel urgent.
Swelling During Pregnancy
Some foot and ankle swelling is completely normal during pregnancy, especially in the third trimester, as your body carries extra fluid and your growing uterus puts pressure on the veins returning blood from your legs. Elevation, compression socks, and gentle movement all help.
The concern is preeclampsia, a potentially dangerous condition that usually develops after 20 weeks. The warning signs that separate it from normal pregnancy swelling: sudden puffiness in your face and hands (not just your feet), rapid weight gain over a few days, severe headaches, vision changes like blurriness or light sensitivity, pain under your ribs on the right side, or shortness of breath. Preeclampsia’s defining feature is high blood pressure combined with signs of organ stress. If you notice any of these symptoms, contact your provider or go to an emergency room right away.
What Doctors Can Do
When home measures aren’t enough, or when swelling is caused by an underlying condition, doctors may prescribe diuretics. These medications help your kidneys release more sodium and water through urine, reducing the total fluid volume in your body. The type prescribed depends on the cause. For heart failure, stronger diuretics that act on a specific part of the kidney are the standard first step, sometimes combined with a milder type if the first isn’t enough on its own. Your doctor will monitor your bloodwork while you’re on these, since they affect your electrolyte balance.
Beyond medication, treatment targets whatever is driving the swelling. If it’s a vein problem, procedures to improve blood flow may help. If it’s a medication side effect, switching to an alternative often resolves things. If a heart, kidney, or liver condition is responsible, managing that condition is what ultimately controls the swelling. The home strategies described above remain useful alongside any medical treatment, and most doctors will recommend you keep using them.