Several types of medication reduce swelling, and the right one depends on what’s causing it. Anti-inflammatory drugs like ibuprofen and naproxen are the most common starting point for swelling from injuries, arthritis, or general inflammation. But swelling caused by fluid retention, allergic reactions, or autoimmune conditions each calls for a different class of medication.
Anti-Inflammatory Drugs (NSAIDs)
Nonsteroidal anti-inflammatory drugs are the go-to for swelling tied to injury, pain, or joint inflammation. They work by blocking an enzyme your body uses to produce chemicals that trigger inflammation. When you sprain an ankle, bump your knee, or wake up with a stiff, swollen joint, these chemicals flood the area. NSAIDs slow that process down.
The most widely available options are ibuprofen (Advil, Motrin) and naproxen (Aleve). Both are sold over the counter. Naproxen lasts longer per dose, so many people prefer it for sustained swelling, while ibuprofen kicks in a bit faster. Aspirin also has anti-inflammatory properties but is used less often for swelling because higher doses are needed and stomach irritation is more likely. Prescription-strength versions of these drugs exist for conditions like rheumatoid arthritis and ankylosing spondylitis, where daily maximum doses of naproxen can go up to 1,500 mg under medical supervision.
Timing matters. After an acute injury, the inflammatory response typically begins within 24 hours and peaks between days one and five. Starting an NSAID early in that window can meaningfully limit how much swelling develops.
Topical Anti-Inflammatory Gels
If you’d rather not take a pill, topical NSAID gels and patches deliver the drug directly to the swollen area. Diclofenac gel is the most common option and is available both over the counter and by prescription. When applied to the skin, it reaches the tissue underneath while producing blood levels that are less than 1% to about 2% of what you’d get from an oral dose. That drastically lowers the risk of stomach problems and other systemic side effects.
Topical NSAIDs work best for superficial swelling: sprains, strains, bruises, and localized joint inflammation close to the skin’s surface. A large Cochrane review found that topical NSAIDs provided meaningful pain relief for acute musculoskeletal injuries compared to placebo. They’re less effective for deep joints like the hip, where the drug simply can’t penetrate far enough.
Corticosteroids for Stronger Inflammation
When NSAIDs aren’t enough, corticosteroids are the next step up. These are powerful anti-inflammatory drugs that suppress a broader part of the immune response. Oral forms like prednisone treat swelling linked to autoimmune conditions such as rheumatoid arthritis and lupus, as well as severe allergic reactions, asthma flares, and inflammatory bowel disease.
Injectable corticosteroids, commonly called cortisone shots, target a specific area. They’re frequently used for tendinitis, bursitis, and arthritis in a single joint. A shot into a swollen knee or shoulder can reduce inflammation for weeks or even months. The tradeoff is that repeated injections in the same spot can weaken surrounding tissue over time, so they’re typically limited to a few per year in any one joint.
Oral corticosteroids are generally prescribed in short courses because long-term use carries significant risks, including bone thinning, elevated blood sugar, weight gain, and increased infection susceptibility.
Diuretics for Fluid-Related Swelling
Swelling isn’t always caused by inflammation. Sometimes it’s fluid buildup, called edema, especially in the legs, ankles, and feet. This type of swelling is common in heart failure, liver cirrhosis, and kidney disease. Diuretics, often called water pills, help your kidneys flush out excess sodium and water.
Diuretics are effective for these systemic causes of edema, but they don’t help with swelling from a sprained ankle or a localized injury. There is no evidence supporting their use for non-systemic causes. For heart failure patients who don’t respond well to standard diuretics, research shows that torsemide is more effective than furosemide (Lasix) at reducing hospitalization risk and cardiac mortality. Patients with fluid buildup from liver cirrhosis typically use a combination approach with two different types of diuretics working together.
These are prescription medications, not something to self-treat with. The underlying condition driving the fluid retention determines which diuretic, what dose, and how closely your kidney function and electrolytes need monitoring.
Antihistamines for Allergic Swelling
Swelling from an allergic reaction operates through an entirely different mechanism. Your body releases histamine, which causes blood vessels to leak fluid into surrounding tissue. This can show up as hives, facial puffiness, or angioedema, a deeper swelling that often affects the lips, eyelids, throat, or hands.
Over-the-counter antihistamines like cetirizine (Zyrtec), loratadine (Claritin), and diphenhydramine (Benadryl) block histamine and can reduce mild to moderate allergic swelling. For more severe angioedema, treatment may involve corticosteroids or epinephrine in addition to antihistamines. If you experience swelling around the throat or difficulty breathing, that’s a medical emergency requiring epinephrine, not just an antihistamine.
Who Should Be Cautious With NSAIDs
NSAIDs are widely available, but they aren’t safe for everyone. People with high blood pressure face particular risk. A large longitudinal study found that using NSAIDs for 90 days or more increased the risk of chronic kidney disease by 32% in people with hypertension, compared to non-users. Even short-term use (under 90 days) raised the risk by 18%. NSAIDs can cause the body to retain sodium, raise blood pressure, and reduce blood flow to the kidneys.
People with existing kidney disease, heart failure, or a history of stomach ulcers should generally avoid oral NSAIDs. The same goes for anyone on blood thinners, since NSAIDs increase bleeding risk. For these groups, topical NSAIDs, acetaminophen (which reduces pain but not swelling), or other targeted treatments are typically safer alternatives.
Proteolytic Enzyme Supplements
You may have seen bromelain or serratiopeptidase marketed as natural anti-swelling supplements. Serratiopeptidase in particular is promoted across surgery, orthopedics, and dentistry for its supposed anti-inflammatory and anti-swelling effects. However, a systematic review of the available evidence found that the clinical studies supporting it have poor methodology, small sample sizes, and inconsistent dosing. The review concluded that the existing scientific evidence is insufficient to support its use as an anti-inflammatory agent. Bromelain, derived from pineapple, has somewhat more promising early data for post-surgical swelling, but the evidence remains limited compared to conventional options.
If you’re dealing with swelling after surgery or a dental procedure, proven medications are a more reliable choice than enzyme supplements at this point.