Elevating your ankles above heart level, wearing compression socks, and reducing salt intake are the three most effective ways to bring down ankle swelling. Most mild swelling responds to these strategies within a few hours to a few days, depending on the cause. But the right approach depends on whether your swelling is from standing all day, a medication side effect, or something that needs medical attention.
Elevate Your Legs Above Your Heart
Elevation works by letting gravity pull fluid away from your ankles and back toward your core. The key detail most people get wrong: your legs need to be above the level of your heart, not just propped on an ottoman. Lying flat on your back with your legs on a stack of pillows gets the angle right. Aim for about 15 minutes per session, three to four times a day.
If you work at a desk or stand for long stretches, even a single elevation session at the end of the day can make a noticeable difference. For persistent swelling, consistency matters more than duration. Four short sessions spread throughout the day outperform one long one.
Use Compression Socks at the Right Pressure
Compression socks work by gently squeezing your lower legs, which prevents fluid from pooling around your ankles. They’re measured in millimeters of mercury (mmHg), and the right level depends on how severe your swelling is.
- 8 to 15 mmHg (mild): Good for tired, achy legs and minor end-of-day puffiness.
- 15 to 20 mmHg (moderate): Helpful for minor varicose veins, travel swelling, and everyday edema. This is the highest level you can typically buy without a prescription.
- 20 to 30 mmHg (firm): Medical-grade compression for moderate swelling or post-surgical recovery. Usually requires a prescription.
- 30 to 40 mmHg (extra-firm): Prescribed for severe swelling, venous ulcers, or significant varicose veins.
For most people dealing with occasional puffy ankles, over-the-counter socks in the 15 to 20 mmHg range are a reasonable starting point. Put them on first thing in the morning before swelling has a chance to build up. If your swelling doesn’t improve or you need higher compression, that’s a conversation for your doctor, since the wrong pressure level can restrict circulation.
Cut Back on Sodium
Salt causes your body to hold onto water, and that extra fluid often settles in your ankles and feet. Keeping your sodium intake under 2,000 mg per day is a widely recommended target for people managing fluid retention. For context, a single fast-food meal can easily exceed that entire daily limit.
The biggest sources of hidden sodium aren’t the salt shaker on your table. They’re canned soups, deli meats, frozen meals, bread, condiments, and restaurant food. Reading nutrition labels and cooking more meals at home gives you far more control. Staying well-hydrated with water also helps your kidneys flush excess sodium rather than storing it as fluid in your tissues. This sounds counterintuitive when you’re already swollen, but mild dehydration actually signals your body to retain more water, not less.
Move Your Ankles and Calves Throughout the Day
Your calf muscles act as a pump for your veins, pushing blood and fluid upward against gravity every time they contract. When you sit or stand still for hours, that pump stops working and fluid collects at the lowest point: your ankles.
Ankle pumps are the simplest fix. Point your toes down, then pull them up toward your shin, and repeat for two to three minutes. Do this two to three times per hour when you’re sitting for long stretches. Walking, even briefly, activates the same calf pump more forcefully. If you’re on a long flight or stuck at a desk, setting a timer to get up and move every 30 to 60 minutes makes a real difference.
Check Whether Your Medication Is the Cause
Ankle swelling is a common side effect of certain blood pressure medications, particularly a class called calcium channel blockers (amlodipine is one of the most widely prescribed). Between 1% and 15% of people taking these drugs develop ankle swelling, and at higher doses, that number can climb above 80%. The swelling is dose-related, meaning it tends to worsen as the dose increases.
Other medications that frequently cause ankle swelling include some diabetes drugs, anti-inflammatory painkillers like ibuprofen, and hormone therapies including estrogen. If your swelling started or worsened after beginning a new medication, don’t stop taking it on your own, but bring it up with whoever prescribed it. In many cases, adding a second medication or switching to an alternative can dramatically reduce the problem. One study found that combining amlodipine with another blood pressure drug cut the rate of swelling from nearly 19% to under 8%.
Swelling in One Ankle vs. Both
Swelling that affects both ankles roughly equally usually points to a systemic cause: too much salt, prolonged sitting, medication side effects, pregnancy, or conditions like heart or kidney issues. This type of swelling tends to develop gradually and worsen over the course of a day.
Swelling in just one ankle is a different situation. If it came on suddenly and is accompanied by pain, cramping, warmth, or a change in skin color (redness or a purple hue), these are signs of a possible deep vein thrombosis, a blood clot in one of the deep veins of your leg. DVT is more likely if you’ve recently had surgery, been on bed rest, taken a long flight, or are on hormonal birth control. A clot that breaks loose can travel to your lungs and become life-threatening.
Seek emergency care if you experience sudden shortness of breath, chest pain that worsens with deep breathing or coughing, a rapid pulse, dizziness, or coughing up blood. These are warning signs that a clot has reached your lungs.
Lifestyle Habits That Prevent Recurring Swelling
If your ankles swell regularly, the daily habits that prevent it matter more than the ones that treat it after the fact. Wearing compression socks during the day (especially during travel or long shifts on your feet), keeping sodium under 2,000 mg, and building short walks or calf exercises into sedentary hours address the most common triggers before fluid has a chance to accumulate.
Maintaining a healthy weight also reduces pressure on your veins and makes it easier for blood to return from your lower legs. Sleeping with a pillow under your calves can help if you tend to wake up with puffy ankles. And if you stand for work, alternating between standing and sitting, or using an anti-fatigue mat, reduces the gravitational load that drives fluid downward throughout your shift.