For a tooth infection, over-the-counter pain relievers are your best immediate option, but the infection itself almost always requires dental treatment rather than antibiotics alone. The most effective pain relief combines ibuprofen and acetaminophen together, and in most cases, a dentist needs to physically treat the infected tooth before it will truly resolve.
The Best OTC Pain Relief Combination
Ibuprofen and acetaminophen taken together outperform either one alone for dental pain, and this combination is now the standard recommendation from the American Dental Association.
For mild to moderate pain, take 400 to 600 mg of ibuprofen every 6 hours for the first 24 hours, then 400 mg as needed every 4 to 6 hours after that. For more intense pain, add 500 mg of acetaminophen to each ibuprofen dose, taking both together every 6 hours. These two medications work through completely different pathways, so combining them is safe and significantly more effective than doubling up on either one. This combination often controls dental pain as well as or better than prescription painkillers.
Avoid aspirin if the area is bleeding or if you’re expecting a dental procedure soon, since it thins the blood and can make bleeding harder to control.
Why Antibiotics Alone Won’t Fix It
This is the part most people don’t expect: for the majority of tooth infections, antibiotics aren’t recommended at all. The ADA’s clinical practice guidelines are clear on this. For infections contained within the tooth or the area immediately around it, including localized abscesses, antibiotics added to dental treatment don’t improve outcomes. The infection lives inside the tooth or in a pocket of pus that antibiotics in your bloodstream can’t effectively reach.
What actually resolves the infection is physical treatment by a dentist. That means draining the abscess, cleaning out the infected tissue inside the tooth (a root canal), or extracting the tooth if it’s too damaged to save. Without one of these procedures, the infection will persist or return, no matter how many rounds of antibiotics you take.
Antibiotics become necessary in one specific situation: when the infection has spread beyond the tooth into your body. Signs of this include fever, rapidly spreading facial swelling, or feeling generally unwell. In that case, the standard prescription is amoxicillin 500 mg three times a day for 3 to 7 days, given alongside dental treatment. Penicillin V is an alternative at the same dose taken four times daily.
If You’re Allergic to Penicillin
If you have a penicillin allergy and do need antibiotics, the alternatives depend on the type of allergy you have. Cephalexin and azithromycin are the most commonly recommended substitutes. Doxycycline and clarithromycin are also options your dentist may consider. Clindamycin, which used to be a go-to alternative, is now discouraged because even a single dose carries a meaningful risk of a serious intestinal infection caused by C. difficile bacteria.
Treatment courses should stay within 7 days for most antibiotics, or 5 days for azithromycin. Longer courses don’t help and increase the risk of side effects and antibiotic resistance.
Home Remedies That Actually Help
While you’re waiting for a dental appointment, a few things can take the edge off.
A warm saltwater rinse is genuinely useful, not just a folk remedy. Mix about 1 teaspoon of salt into 8 ounces of warm water and swish gently for 30 seconds before spitting it out. If your mouth is very tender, start with half a teaspoon. The salt kills bacteria by pulling water out of their cells through osmosis and raises the pH in your mouth, making it harder for bacteria to thrive. You can repeat this several times a day.
Clove oil contains eugenol, a natural numbing compound that can temporarily dull tooth pain. Apply a tiny amount directly to the affected tooth using a cotton ball or swab. Be careful with this one: avoid getting it on your gums or surrounding tissue, as it can cause blistering, swelling, and gum damage with repeated use. It’s a short-term fix, not something to rely on for days.
Keeping your head elevated, even while sleeping, can reduce throbbing pain by lowering blood pressure to the area. Cold compresses on the outside of your cheek (20 minutes on, 20 minutes off) help with swelling.
What Happens at the Dentist
The dental treatment you’ll need depends on how much damage the infection has caused. If the tooth’s internal structure is still intact enough to work with, a root canal is the typical approach. The dentist removes the infected tissue from inside the tooth, cleans and disinfects the interior, then seals it. If there’s a visible abscess with pus buildup, they may drain it first to relieve pressure and pain. If the tooth is cracked below the gumline or too structurally damaged to support a repair, extraction is the better option.
The goal in every case is the same: physically remove the source of infection. Pain relief and antibiotics buy you time, but they don’t replace this step.
Signs the Infection Is Spreading
Most tooth infections stay localized, but when they spread, things can get dangerous quickly. Get to an emergency room if you experience any of the following:
- Fever over 100.4°F, which signals the infection has moved beyond the tooth
- Difficulty swallowing or breathing, which means swelling may be compressing your airway
- Swelling that reaches your eye or extends down your neck
- Trouble opening your mouth
- Rapid facial swelling that’s visibly progressing over hours
These symptoms mean the infection is entering deeper tissue spaces in your head and neck. This is rare, but it can become life-threatening. An emergency room can provide IV antibiotics and surgical drainage that a dental office typically cannot.