Several everyday beverages can help reduce knee pain, primarily by lowering inflammation or supporting the structures inside your joint. Tart cherry juice, turmeric drinks, green tea, and even plain water all have evidence behind them. Just as important: some drinks actively make knee pain worse. Here’s what the research shows for each option.
Why What You Drink Matters for Your Knees
Your knee cartilage depends heavily on water. The cartilage matrix contains negatively charged molecules called proteoglycans that attract and hold water molecules, which is what gives cartilage its ability to absorb shock and stay lubricated. When you’re chronically under-hydrated, that cushioning system works less efficiently. Plain water won’t cure arthritis, but consistent hydration is the baseline that makes everything else work better.
Beyond hydration, certain compounds in beverages can dial down the inflammatory chemicals that drive joint pain and stiffness. Others, like sugar and alcohol, do the opposite. The effects aren’t instant. Dietary changes that target inflammation typically take two to four weeks before you notice meaningful improvement in pain levels, with some studies showing clear results at the one-month mark.
Tart Cherry Juice
Tart cherry juice is one of the better-studied options for knee osteoarthritis. In a randomized crossover trial, participants drank two 8-ounce bottles of tart cherry juice daily for six weeks. The cherries contain anthocyanins, plant pigments that act as natural inflammation reducers. These compounds work by blocking some of the same pathways targeted by over-the-counter pain relievers.
If you try it, look for 100% tart cherry juice (not cherry-flavored juice blends loaded with sugar). The 16 ounces per day used in the trial is a reasonable target. Some people prefer tart cherry concentrate mixed into water, which delivers the same compounds with less volume and less sugar. Expect to give it at least four to six weeks before judging whether it helps.
Turmeric Drinks
Turmeric’s active compound, curcumin, has strong evidence for joint pain. A meta-analysis of randomized trials found that roughly 1,000 mg of curcumin per day for 8 to 12 weeks reduced arthritis pain and inflammation at levels comparable to ibuprofen.
The catch is absorption. Curcumin on its own passes through your gut without much getting into your bloodstream. Adding black pepper dramatically improves absorption. One well-designed trial used 500 mg of curcumin with 5 mg of black pepper extract, taken three times daily for six weeks, and saw significant results. A turmeric latte (golden milk) made with turmeric powder, black pepper, and a fat source like coconut milk or whole milk follows this same logic, since fat also helps with absorption.
A teaspoon of ground turmeric contains roughly 200 mg of curcumin, so reaching 1,000 mg from drinks alone requires either multiple servings throughout the day or supplementing your drinks with a concentrated turmeric extract. Be generous with the black pepper.
Green Tea
Green tea contains a potent antioxidant compound (EGCG) that has been shown in lab and animal studies to protect cartilage cells and reduce the production of inflammatory enzymes that break down joint tissue. The research in humans is less robust than for tart cherry juice or curcumin, but green tea has a strong safety profile and enough biological plausibility to make it a reasonable daily addition. Two to three cups per day is the range most commonly associated with anti-inflammatory benefits in general health research.
Low-Fat Milk
This one surprises many people who assume all dairy promotes inflammation. A large study tracking women with knee osteoarthritis over time found a clear dose-response relationship between milk intake and the rate at which the joint space in the knee narrowed (a direct measure of cartilage loss). Women who drank no milk lost an average of 0.38 mm of joint space, while those drinking seven or more glasses per week lost only 0.26 mm. That’s a roughly 30% slower rate of progression. Over 90% of participants in the study drank fat-free or low-fat milk.
The protective effect likely comes from milk’s combination of calcium, vitamin D, and protein, all of which support bone and cartilage maintenance. This doesn’t mean you should force yourself to drink milk if you don’t tolerate it, but if you already enjoy it, there’s reason to keep it in your routine.
Bone Broth
Bone broth provides collagen, glycine, and other amino acids that serve as raw materials for cartilage and connective tissue repair. The clinical evidence specifically for knee pain is limited compared to the options above, but the nutritional profile is supportive. Broth also contributes to hydration and is easy to consume warm, which some people find soothing for stiff joints. If you make it at home, simmering bones for 12 to 24 hours with a splash of vinegar helps extract more minerals.
Drinks That Make Knee Pain Worse
Sugary Beverages
Regular soda and sweetened drinks are among the worst choices for joint pain. Heavy consumption of sugar-sweetened beverages is associated with higher levels of C-reactive protein (CRP), a key marker of systemic inflammation. In one study, heavy soda drinkers with obesity had CRP levels roughly 0.5 mg/L higher than non-drinkers, a meaningful increase that reflects chronic, body-wide inflammation reaching your joints. Sugar also contributes to weight gain, and every extra pound of body weight puts approximately four extra pounds of force on your knees with each step.
Alcohol
If your knee pain is related to gout (caused by uric acid crystals forming in the joint), alcohol is a particularly important trigger. All types of alcohol increase uric acid levels by both reducing how much your kidneys excrete and increasing how much your body produces. Beer is the worst offender because it contains not only alcohol but also high levels of a purine called guanosine that your body converts directly into uric acid. In a study of recurrent gout attacks, more than one to two servings of wine in 24 hours more than doubled the risk of a flare. Two to four beers raised the risk by 75%, and the same amount of liquor raised it by 67%.
Even if your knee pain is from osteoarthritis rather than gout, alcohol promotes inflammation and can interfere with sleep quality, which in turn slows tissue repair.
A Practical Daily Approach
You don’t need to drink all of these. A reasonable strategy is to pick one or two options that fit your taste and routine, then stay consistent for at least a month before evaluating whether your pain has changed. A simple framework might look like this:
- Morning: Green tea (two to three cups throughout the morning)
- Midday: 8 ounces of tart cherry juice
- Evening: A turmeric latte with black pepper and coconut milk
- Throughout the day: Water, targeting at least 8 cups total
Cut back on soda, sweetened iced teas, and fruit drinks with added sugar. If you drink alcohol, moderate your intake and avoid beer if gout is a concern. These changes won’t replace other treatments for significant knee problems, but they create a less inflammatory environment in your body that supports everything else you’re doing for your joints.