The best painkiller for a toothache is ibuprofen and acetaminophen taken together. This combination outperforms either drug alone and, according to a 2025 study in The Journal of the American Dental Association, even beats prescription opioids for dental pain relief. If you can only take one, ibuprofen is the stronger choice because it reduces both pain and the inflammation driving it.
Why the Combination Works So Well
Ibuprofen and acetaminophen attack pain through completely different pathways. Ibuprofen blocks the enzymes that produce prostaglandins, the chemical signals your body releases at the site of inflammation. In a toothache, prostaglandins flood the nerve endings in and around the tooth, amplifying pain and swelling. By cutting off that production, ibuprofen tackles the root cause. Acetaminophen works centrally, dulling pain perception in the brain rather than at the tooth itself.
Because these two drugs work independently, combining them gives you broader coverage than doubling up on either one. In the 2025 dental surgery trial, patients who took 500 mg of acetaminophen with 400 mg of ibuprofen reported less pain, fewer side effects, and better sleep than patients given hydrocodone (an opioid) with acetaminophen. The over-the-counter combination was most effective during the peak pain window about two days after surgery.
There is now an FDA-approved combination tablet containing 250 mg of acetaminophen and 125 mg of ibuprofen per tablet. The standard dose is two tablets every eight hours, with a maximum of six tablets per day. You can also simply buy each drug separately and take them on a staggered schedule, which lets you adjust the timing so relief overlaps throughout the day.
If You Can Only Take One
Ibuprofen is the better solo option. Toothaches almost always involve inflammation, whether from a cavity reaching the nerve, an abscess forming, or gum tissue swelling around an erupting wisdom tooth. Acetaminophen does nothing for inflammation. It reduces pain signals, but the swelling and pressure continue building. Ibuprofen addresses both.
For mild to moderate dental pain, 400 mg of ibuprofen every six to eight hours is the typical starting point. For moderate to severe pain, dentists can prescribe higher doses, up to 600 mg per dose. Naproxen sodium is another option in the same drug class. It lasts longer per dose (about 12 hours versus 6 to 8 for ibuprofen), which can be helpful overnight.
Topical Options for Immediate Relief
While you wait for oral painkillers to kick in, topical numbing agents can take the edge off. Benzocaine gels (sold as Orajel and similar brands) numb the area on contact. Clove oil, which contains a natural compound called eugenol, works through the same principle. In a clinical comparison, both clove gel and benzocaine gel reduced pain scores equally well compared to placebo, with no significant difference between them.
Neither is completely side-effect free. Both can cause a brief burning sensation during application. Clove oil is a known tissue irritant and caused small mouth ulcers in some study participants. Benzocaine, when used in large amounts, carries a rare but serious risk of a blood oxygen condition called methemoglobinemia. For a toothache, a small dab applied directly to the painful spot is generally well tolerated, but these are meant as short-term bridges to proper treatment, not daily solutions.
Who Should Avoid Ibuprofen
Ibuprofen and other anti-inflammatory painkillers are not safe for everyone. You should avoid them or use them only under medical guidance if you have:
- Stomach ulcers or a history of GI bleeding. These drugs irritate the stomach lining and can trigger or worsen ulcers.
- Kidney disease. Even short-term use can harm the kidneys in people with existing kidney problems.
- Heart disease or stroke risk factors. The FDA warns that anti-inflammatory painkillers increase the risk of heart attack and stroke, potentially within the first weeks of use, with higher doses and longer use raising the risk further.
- Bleeding disorders or blood thinner use. These drugs interfere with clotting and increase the risk of bleeding, especially when combined with anticoagulant medications.
- Prior gastric bypass surgery. The risk of ulceration is significantly higher after bypass procedures.
If ibuprofen is off the table, acetaminophen alone is the fallback. It is gentler on the stomach and kidneys, but it does stress the liver. People with liver disease or those who drink alcohol regularly should cap their dose at 2,000 mg per day, roughly half the standard maximum for healthy adults.
When Pain Signals Something Serious
A toothache that responds to over-the-counter painkillers and fades within a day or two is typically manageable until you can see a dentist. Certain signs, however, mean the underlying problem has escalated beyond what painkillers can handle.
Facial swelling, especially if it spreads toward the jaw, eye, or neck, points to an infection that may be spreading into surrounding tissue. Fever alongside dental pain is another clear warning sign. Swollen lymph nodes in the neck, a persistent bad taste in your mouth (often from a draining abscess), or general feelings of illness suggest the infection is systemic. If you have difficulty swallowing or breathing along with facial swelling, that is a medical emergency requiring an ER visit, not a dental office. The same applies to uncontrolled bleeding, jaw trauma, or serious facial injuries.
Pain that is severe enough to prevent sleeping or eating, or that lasts more than a day without improving, warrants urgent dental care. Painkillers manage symptoms, but they do nothing to fix the cavity, crack, or infection causing the problem. The sooner the source is treated, the less pain management you will need.