For swollen gums, an anti-inflammatory pain reliever like ibuprofen reduces both the swelling and discomfort, while a warm saltwater rinse helps draw out fluid from inflamed tissue. But what you take depends on whether you’re dealing with a temporary flare-up or an ongoing problem. Most gum swelling traces back to bacterial buildup along the gumline, and the most effective “treatment” is often better cleaning rather than any pill or rinse.
Why Gums Swell in the First Place
The most common cause is plaque, a sticky, colorless film of bacteria that forms on your teeth after eating sugars and starches. When plaque sits on your teeth for more than a day or two, it irritates the surrounding gum tissue and triggers inflammation. Left longer, plaque hardens into tartar beneath the gumline, which acts as a protective shield for bacteria and makes the problem worse. At that point, no amount of brushing will remove it; only a professional cleaning can.
Hormonal shifts during pregnancy, menstruation, or from birth control pills can also make gums more reactive to the same amount of plaque. Conditions that lower immunity, including certain cancers and their treatments, raise the risk further. Vitamin C plays a role too: even mildly low blood levels of vitamin C (not low enough to cause scurvy) have been linked to increased gum bleeding.
Over-the-Counter Pain Relievers
Ibuprofen is the go-to for swollen gums because it’s both a painkiller and an anti-inflammatory. For adults, the typical dose is 400 mg every four to six hours as needed. It won’t fix the underlying cause, but it can take the edge off while you address the real problem. Avoid taking it for more than a few days without guidance from a dentist or doctor, especially if you have stomach issues or are on blood thinners.
Acetaminophen helps with pain but doesn’t reduce inflammation, so it’s less useful when swelling is your main concern. If you’re pregnant or unsure which painkiller is safe for you, check with your provider before taking anything.
Saltwater Rinse
A saltwater rinse is one of the simplest and most effective things you can do at home. Mix 1 teaspoon of salt into 8 ounces of warm water, swish it around your mouth for 30 to 60 seconds, and spit it out. Salt kills bacteria through osmosis, pulling water out of bacterial cells, and it draws excess fluid from swollen gum tissue, which helps reduce puffiness. You can do this two to three times a day, especially after meals.
Hydrogen Peroxide Rinse
Diluted hydrogen peroxide is another option for reducing bacteria in your mouth. Start with the 3% concentration sold at most drugstores, then mix equal parts peroxide and water to bring it down to 1.5%. Swish for 30 to 60 seconds and spit. Don’t exceed 90 seconds, and never swallow the mixture. This works well as an occasional rinse but shouldn’t replace daily brushing and flossing.
Antiseptic Mouthwash
Chlorhexidine mouthwash is the strongest antimicrobial rinse available and is typically prescribed by a dentist rather than bought over the counter. It’s genuinely effective: clinical data shows it reduces plaque buildup by a large margin within four to six weeks and moderately reduces gum bleeding over the same period. The British Society of Periodontology recommends it specifically when mechanical cleaning (brushing and flossing) is too painful to do properly.
The catch is that chlorhexidine isn’t meant for long-term use. Using it beyond about four weeks causes noticeable tooth staining that requires professional cleaning to remove, and it can accelerate tartar buildup, the very thing that causes gum problems. It’s best thought of as a short-term bridge while your gums heal enough to tolerate normal brushing.
Standard over-the-counter antiseptic mouthwashes with cetylpyridinium chloride or essential oils are milder alternatives. A 12-week clinical trial found that adding a mouthwash to brushing reduced gum bleeding between teeth by roughly 69%, far more than adding flossing alone (16%). The combination of brushing, flossing, and rinsing cut bleeding by about 79%.
Flossing and Better Brushing
This isn’t the exciting answer, but it’s the most important one. Swollen gums are almost always a signal that bacteria are accumulating in places your toothbrush can’t reach. Adding flossing to your routine reduces gum inflammation between teeth by about 9% on its own. That sounds modest, but it compounds over time, and the real gains come from consistency.
If your gums bleed when you start flossing, that’s actually a sign you need to keep going, not stop. The bleeding usually decreases within one to two weeks as the inflammation settles. Use gentle pressure and curve the floss around each tooth rather than snapping it straight down into the gum. Interdental brushes (the tiny bottle-brush-shaped picks) are easier for many people and clean the same spaces effectively. A soft-bristled toothbrush angled at 45 degrees toward the gumline, used twice a day for two minutes, handles the rest.
Vitamin C
If your diet is low in fruits and vegetables, increasing your vitamin C intake may help. Research from Harvard found that even slightly low vitamin C levels in the bloodstream (well above the threshold for scurvy) were associated with increased gum bleeding. You don’t necessarily need a supplement; a few servings of citrus fruits, bell peppers, strawberries, or broccoli each day can bring levels up. If you do supplement, 500 mg daily is a common and well-tolerated amount.
Professional Cleaning
Once tartar has formed beneath the gumline, no home remedy will remove it. A dental cleaning (sometimes called scaling and root planing for more advanced cases) physically scrapes away the hardened deposits and smooths the root surfaces so gums can reattach. The American Dental Association recommends this as the first-line treatment for gum disease that has progressed beyond simple gingivitis. For most people, the procedure takes one or two visits, and gums begin improving within a couple of weeks afterward.
Signs You Need Urgent Care
Most swollen gums respond to the measures above within a week or two. But certain symptoms point to something more serious, like a dental abscess or spreading infection, that requires immediate attention. Get to a dentist or emergency room if you notice any of the following:
- Severe pain that doesn’t respond to over-the-counter painkillers at full dose
- Fever above 100.4°F (38°C)
- Hard lumps on the gums or swelling in the face, jaw, or neck
- Difficulty swallowing or breathing due to swelling
- Swelling around the eyes or severe facial swelling
- Tender lymph nodes in the neck
A dental abscess larger than 1 cm in diameter is considered a danger sign. Infections that spread from the gums into the floor of the mouth, the jaw, or the neck can become life-threatening without treatment. If you can’t get to a dentist, a hospital emergency department can manage the infection until you can.