There is no single best medicine for arthritis because the answer depends entirely on which type you have. Osteoarthritis, the wear-and-tear form, is treated primarily with pain relievers and anti-inflammatory drugs. Rheumatoid arthritis, an autoimmune disease, requires medications that slow the immune system’s attack on your joints. Choosing the right medication also depends on your pain severity, other health conditions, and how well you tolerate certain drugs.
Osteoarthritis: Starting With Over-the-Counter Options
For most people with osteoarthritis, treatment begins with oral anti-inflammatory drugs like ibuprofen or naproxen. These belong to a class called NSAIDs, and pooled clinical trial data shows they provide a small but meaningful advantage over acetaminophen (Tylenol) for general joint pain. Acetaminophen can still help with mild symptoms and tends to cause fewer side effects, particularly for people with stomach sensitivity, but it does not reduce inflammation the way NSAIDs do.
When used for arthritis rather than occasional pain, ibuprofen is typically taken at higher doses than what most people use for a headache. Prescription-strength dosing for osteoarthritis ranges from 1,200 to 3,200 mg per day, split into three or four doses. That’s significantly more than the 400 mg you might take for a sore muscle, which is why long-term use should be guided by a doctor who can monitor for stomach, kidney, and cardiovascular side effects.
Topical Treatments for Targeted Relief
If you want to avoid the systemic side effects of oral medications, topical options can work well for joints close to the skin’s surface like knees, hands, and elbows. Topical NSAIDs (diclofenac gel is the most common) deliver anti-inflammatory medicine directly to the joint with far less absorption into the bloodstream. Capsaicin cream is another option. It works differently, depleting the nerve chemical that transmits pain signals from the joint. It needs to be applied three or four times a day consistently to build up its effect, and it causes a burning sensation for the first week or two that fades with regular use.
Joint Injections When Pills Aren’t Enough
For osteoarthritis that doesn’t respond well to oral or topical medications, injections directly into the joint offer a next step. The two main options work on different timelines.
Corticosteroid injections reduce inflammation quickly, with relief kicking in within two to three days. How long the benefit lasts varies widely. Some people get months of relief, others only a few weeks, and for some the injection doesn’t help at all. These are generally limited to a few times per year because repeated corticosteroid injections may accelerate cartilage breakdown over time.
Hyaluronic acid injections take a different approach, supplementing the natural lubricating fluid in your joint. They’re slower to work, sometimes requiring several weeks before you notice improvement, but the relief can last months or longer. They’re most commonly used in the knee.
Do Glucosamine and Chondroitin Work?
These supplements are among the most popular over-the-counter products marketed for joint health, but the clinical evidence is not encouraging. A meta-analysis published in Osteoarthritis and Cartilage found that adding glucosamine, either alone or combined with chondroitin, to an exercise program had no significant effect on knee pain or physical function compared with exercise alone. Studies measuring whether these supplements slow cartilage loss by preserving joint space width have also found no statistically significant differences between supplement and placebo groups. Some people report subjective improvement, but the controlled data consistently fails to support a meaningful benefit.
Rheumatoid Arthritis: A Different Category Entirely
Rheumatoid arthritis requires a fundamentally different treatment strategy. Because the disease involves your immune system attacking healthy joint tissue, pain relievers alone won’t prevent the progressive joint damage that RA causes. The goal is to suppress the specific immune pathways driving the disease, and that means starting disease-modifying drugs early.
Methotrexate as the Foundation
Methotrexate has been the first-choice medication for rheumatoid arthritis for decades, and it remains the cornerstone of treatment. It works by dampening the overactive immune response that causes joint inflammation and destruction. The typical starting dose is 15 mg taken once a week (not daily), and doctors increase it gradually by 5 mg per month until symptoms are controlled or the maximum tolerable dose is reached, usually between 25 and 30 mg per week. If the oral version isn’t effective enough, switching to an injectable form often improves the response. Methotrexate requires regular blood tests to monitor liver function and blood cell counts, but most people tolerate it well long-term.
Biologics for Incomplete Responses
When methotrexate alone doesn’t fully control RA, biologics are the next major step. The most established class targets a protein called TNF, which drives inflammation in the joints. Five TNF-blocking drugs are FDA-approved: infliximab (Remicade), etanercept (Enbrel), adalimumab (Humira), certolizumab (Cimzia), and golimumab (Simponi). These are typically added on top of methotrexate rather than replacing it, because the combination tends to work better than either approach alone.
Biologics are given by injection or infusion, ranging from self-administered shots every week or two to IV infusions every several weeks at an infusion center. They suppress parts of the immune system, which means infections need to be taken more seriously while you’re on them. Your doctor will screen for tuberculosis and hepatitis before starting treatment and monitor you regularly.
JAK Inhibitors: Newer but With Caveats
JAK inhibitors are a newer class of RA medications that come as daily pills rather than injections. Three are currently approved: tofacitinib (Xeljanz), baricitinib (Olumiant), and upadacitinib (Rinvoq). They block specific enzymes inside immune cells that relay inflammatory signals, offering an alternative mechanism to biologics.
However, the FDA has placed its strongest safety warning on all three drugs. A large clinical trial revealed increased risks of serious cardiovascular events, blood clots, cancer, and death compared with TNF blockers. Because of this, current guidelines reserve JAK inhibitors for people who haven’t responded to or can’t tolerate at least one TNF blocker. The risk is particularly elevated in people over 50, current or past smokers, and those with existing cardiovascular risk factors.
Matching Treatment to Your Type of Arthritis
The practical takeaway is straightforward. If you have osteoarthritis, the best starting medicines are oral or topical NSAIDs, with injections available for joints that don’t respond. If you have rheumatoid arthritis, methotrexate is the first-line treatment, with biologics added when needed. In both cases, exercise, weight management, and physical therapy consistently improve outcomes alongside medication. No pill fully replaces the benefit of keeping the joint moving and reducing the mechanical load on it.
If you’re unsure which type of arthritis you have, that distinction matters more than which specific drug you try first. The two conditions look similar on the surface but require completely different treatment philosophies: pain management for OA versus immune suppression for RA.