A saltwater rinse is the simplest and most accessible first step for swollen gums, and it works well for mild inflammation caused by everyday irritation or early-stage gum disease. But the best approach depends on what’s causing the swelling. Plaque buildup, hormonal shifts, vitamin deficiencies, and infections all produce swollen gums, and each responds to different treatments.
Saltwater Rinse for Quick Relief
Dissolve half a teaspoon of salt in a cup of warm water, swish gently for 30 seconds, and spit. Salt draws fluid out of inflamed tissue through osmosis, which temporarily reduces swelling and helps flush bacteria from the gum line. You can repeat this several times a day, and unlike medicated rinses, salt water is safe for extended use without side effects.
For added benefit, you can alternate with a diluted hydrogen peroxide rinse. Low-concentration hydrogen peroxide (the standard 3% drugstore bottle mixed with equal parts water) has a good safety profile for daily oral use and helps kill bacteria in areas your toothbrush can’t reach. Don’t swallow the solution, and stick to that diluted concentration. Higher-strength peroxide products can chemically irritate your gums and make things worse.
Over-the-Counter Pain and Swelling Relief
Ibuprofen is the most effective over-the-counter option because it reduces both pain and inflammation, not just one or the other. The standard adult dose is 400 milligrams every four to six hours as needed. Acetaminophen handles pain but won’t do much for the swelling itself, so ibuprofen is the better choice when your gums are visibly puffy.
If your jaw or cheek is swollen on the outside, hold a cold pack or ice wrapped in a thin cloth against your face for 10 to 20 minutes at a time. This constricts blood vessels near the surface and limits fluid buildup. Don’t apply ice directly to the skin, and give yourself breaks between sessions.
Medicated Mouthwashes
Chlorhexidine rinse is the strongest antimicrobial mouthwash available and is often recommended by dentists for active gum inflammation. A large Cochrane review found high-quality evidence that chlorhexidine significantly reduces plaque buildup and produces a moderate reduction in gingivitis when used alongside normal brushing. It’s genuinely effective.
The catch is staining. Rinsing with chlorhexidine for four weeks or longer causes brown or yellow discoloration on teeth that requires professional cleaning to remove. That limits it to short-term use for specific situations, like recovering from a dental procedure or getting an active flare-up under control. It’s available over the counter in some countries and by prescription in others. Standard antiseptic mouthwashes containing cetylpyridinium chloride are a milder alternative for ongoing daily use.
Why Your Gums Are Swollen in the First Place
The most common cause is plaque accumulation along the gum line. When plaque sits on your teeth too long, your gums mount an inflammatory response: they swell, redden, and bleed easily. This is gingivitis, and it’s reversible with consistent brushing, flossing, and professional cleanings.
Hormonal changes are another major trigger. During pregnancy, progesterone and estrogen levels rise to 10 and 30 times their normal levels by the third trimester. These hormones increase blood flow to gum tissue, suppress parts of the local immune response, and actually serve as a growth factor for certain bacteria that thrive below the gum line. The result is that pregnant women can develop noticeably swollen, tender gums even with good oral hygiene. Similar shifts happen during puberty and menopause, though typically less dramatically.
Certain medications also cause gum overgrowth as a side effect. Immunosuppressants, anti-seizure drugs, and calcium channel blockers (used for blood pressure) are the main culprits. If your gums started swelling after beginning a new medication, that connection is worth raising with your prescriber. Orthodontic treatment with braces or clear aligners can also increase your risk.
Vitamin C and Gum Health
Vitamin C deficiency directly causes gum swelling and is one of the classic symptoms of scurvy. Your gums need vitamin C to maintain the connective tissue that holds them firm against your teeth. Without enough, gum tissue becomes fragile, overgrown, and prone to bleeding.
In one documented case, a patient with severe gingival overgrowth from vitamin C deficiency was treated with 600 milligrams of supplemental vitamin C daily. After four months, the gum overgrowth had markedly reduced, and it stayed that way for at least nine months with no surgical treatment needed. If your diet is low in fruits and vegetables, or you have absorption issues, a vitamin C supplement is a simple intervention that can make a real difference. Most adults need around 75 to 90 milligrams daily to prevent deficiency, though higher doses are used therapeutically.
Improving Your Brushing and Flossing Routine
No rinse or supplement replaces mechanical cleaning. The swelling will keep returning if plaque stays on your teeth. Use a soft-bristled toothbrush angled at 45 degrees toward the gum line, and brush for a full two minutes twice daily. Hard-bristled brushes and aggressive scrubbing can actually injure swollen gums further.
Flossing matters more than most people realize for gum swelling specifically, because the areas between teeth are where plaque accumulates fastest and where your toothbrush can’t reach. If traditional floss is painful on swollen gums, interdental brushes or a water flosser are gentler alternatives that accomplish the same goal. Your gums may bleed when you start flossing regularly. That’s the inflammation responding to disturbance, not a sign you’re causing damage. The bleeding typically stops within a week or two of consistent daily flossing.
Signs That Need Prompt Attention
Most gum swelling is gingivitis and responds to home care within a week or two. But certain symptoms indicate something more serious, like a dental abscess or spreading infection. Watch for a fever, pus draining from the gum line, a foul taste in your mouth, rapid facial swelling, severe throbbing pain, or swollen lymph nodes under your jaw.
A spreading abscess can push swelling into your cheek, under your chin, or into your throat. Difficulty swallowing or breathing from dental swelling is a medical emergency that requires immediate care, not a wait-and-see situation. These complications are uncommon, but they develop quickly when they do happen. Localized gum swelling that doesn’t improve after two weeks of diligent home care also warrants a dental visit, since it may indicate periodontitis (a deeper infection below the gum line) or another underlying cause that rinses alone won’t resolve.