Your body breaks down uric acid primarily through your kidneys, which handle 60–70% of excretion, while your gut eliminates the rest through intestinal bacteria. When that system falls behind, uric acid builds up in your blood, potentially forming crystals in your joints and causing gout. Lowering uric acid comes down to reducing how much your body produces, increasing how much it flushes out, or both.
How Your Body Handles Uric Acid
Uric acid is the end product of purine breakdown. Purines come from two sources: your own cells recycling their DNA, and the food you eat. An enzyme converts purines first to hypoxanthine, then to xanthine, and finally to uric acid. Unlike most mammals, humans lack the enzyme that would break uric acid down further, so we depend entirely on excreting it.
Your kidneys filter uric acid from the blood, reabsorb most of it, then secrete some back into the urine. The net result is that only about 10% of filtered uric acid actually leaves in your urine. The intestinal route works differently: a transporter protein in your gut lining pushes uric acid into the intestines, where bacteria break it down. When either pathway underperforms, blood levels rise. Normal serum uric acid ranges roughly 3.5 to 7.2 mg/dL for men and 2.5 to 6.0 mg/dL for women, though labs vary slightly in their cutoffs.
Medications That Block Uric Acid Production
The most effective way to lower uric acid is to stop your body from making so much of it. Xanthine oxidase inhibitors do exactly that. They block the enzyme responsible for the final two steps of purine breakdown, preventing hypoxanthine from becoming xanthine and xanthine from becoming uric acid. With less uric acid entering the bloodstream, levels drop over weeks to months.
Allopurinol is the most widely prescribed drug in this class and has been used for decades. Febuxostat is a newer alternative, typically reserved for people who can’t tolerate allopurinol. Both work on the same enzyme but bind to it differently. Your doctor will start at a low dose and adjust upward based on blood tests, aiming to bring your level below 6.0 mg/dL, the threshold where crystals begin to dissolve.
Medications That Flush Uric Acid Out
A second class of drugs, called uricosurics, takes the opposite approach. Instead of reducing production, they block the transporter in your kidneys that reabsorbs uric acid back into your blood. With reabsorption reduced, more uric acid passes into your urine and leaves the body. These drugs target a specific transporter protein on the surface of kidney cells that normally pulls uric acid back from the urine before it’s excreted.
Probenecid is the oldest uricosuric still in use. Lesinurad is a newer option that also blocks a second transporter involved in the uric acid spikes some people experience from diuretics. Because uricosurics push more uric acid through the kidneys, staying well hydrated while taking them is important to reduce the risk of kidney stones.
Why Fructose Is a Major Driver
Sugar, specifically the fructose half of table sugar and high-fructose corn syrup, raises uric acid through a unique mechanism that has nothing to do with purines. When your liver processes fructose, the first step burns through a large amount of your cells’ energy currency (ATP). That rapid energy depletion triggers a cascade: the spent energy molecules get broken down through the purine degradation pathway and converted directly into uric acid.
This means a can of regular soda or a glass of fruit juice can spike uric acid even though these drinks contain zero purines. Cutting back on sweetened beverages, candy, and foods with added sugars is one of the highest-impact dietary changes you can make. Whole fruit contains fructose too, but the fiber slows absorption enough that the effect on uric acid is much smaller.
High-Purine Foods to Limit
Purines in food get converted to uric acid during digestion. Not all protein sources are equal. Organ meats and certain seafood sit at the top of the purine scale:
- Liver: 285 mg purines per 100 g
- Mussels: 293 mg per 100 g
- Anchovies: 273 mg per 100 g
- Tiger prawns: 192 mg per 100 g
- Oysters: 185 mg per 100 g
By comparison, a chicken thigh has about 111 mg per 100 g, and beef tenderloin comes in around 98 mg. You don’t need to eliminate all meat and fish, but shifting away from organ meats, shellfish, and small oily fish makes a measurable difference. Concentrated broths and stocks are also surprisingly high, with chicken soup stock reaching over 500 mg per 100 g.
How Water Intake Affects Levels
Drinking more water helps your kidneys flush uric acid, but the relationship isn’t linear. A large cross-sectional study using U.S. national health data found an L-shaped curve: increasing water intake lowered uric acid steadily up to a threshold of about 7.6 mL per kilogram of body weight per day. Beyond that point, additional water had almost no further effect. For a 175-pound (80 kg) person, that threshold works out to roughly 20 ounces (600 mL) of plain water, though total fluid from all sources (food, other beverages) matters too.
Below the threshold, each additional unit of water intake correlated with a 0.16 mg/dL drop in serum uric acid. That’s modest but meaningful when combined with other changes. The practical takeaway: if you’re currently a low water drinker, increasing your intake will help. If you’re already well hydrated, chugging extra glasses won’t move the needle much further.
Coffee’s Protective Effect
Coffee lowers uric acid, and the effect is consistent across multiple studies. A meta-analysis found that drinking one or more cups per day was associated with a reduced risk of gout. Interestingly, the amount needed differs by sex: men saw benefits at 1–3 cups daily, while women needed 4–6 cups for a comparable reduction.
The mechanism isn’t fully settled, but coffee contains compounds that appear to inhibit the same enzyme targeted by prescription medications. This effect occurs with both regular and decaf coffee, suggesting caffeine isn’t the active ingredient. Tea does not show the same benefit.
Vitamin C as a Uric Acid Reducer
Vitamin C competes with uric acid for reabsorption in the kidneys. When vitamin C levels are higher, more uric acid passes into the urine instead of being pulled back into the bloodstream. A meta-analysis of randomized controlled trials found that supplementing with at least 500 mg of vitamin C daily reduced serum uric acid by an average of 0.59 mg/dL. Doses in the studies ranged from 200 mg to 2,000 mg per day, with 500 mg being the most common.
That reduction is real but modest compared to prescription medications, which can lower levels by 2–4 mg/dL or more. Vitamin C supplementation makes the most sense as one piece of a broader strategy rather than a standalone treatment, particularly if your levels are only mildly elevated.
Tart Cherries and Anthocyanins
Tart cherry juice has become one of the most popular natural remedies for uric acid, and there’s some clinical data behind it. In one trial, drinking 240 mL (about 8 ounces) of tart cherry juice daily reduced serum uric acid by 19.2%. Another study using two servings of whole cherries (280 g) showed a significant drop in blood uric acid over five hours after consumption.
Not every study is as encouraging. A trial using cherry juice concentrate (a tablespoon twice daily) found only a slight, non-significant reduction. The active compounds are thought to be anthocyanins, the pigments that give cherries their deep red color, which appear to both inhibit uric acid production and promote excretion. The inconsistency across studies likely reflects differences in cherry type, dose, and duration. If you enjoy tart cherry juice, it’s a reasonable addition to your routine, but don’t rely on it as your primary strategy if your uric acid is significantly elevated.
Putting It All Together
Uric acid levels respond to a combination of what you eat, how much you drink, and whether your kidneys are doing their job efficiently. For mild elevations, dietary changes can be enough: cutting fructose and high-purine foods, drinking adequate water, adding coffee and vitamin C, and incorporating tart cherries. For persistent hyperuricemia or gout, medications that either block production or boost excretion are the most reliable tools. The target for gout patients is a serum level below 6.0 mg/dL, which allows existing uric acid crystals to slowly dissolve over months. Most people need some combination of lifestyle changes and medication to reach and maintain that goal.