How Much Baking Soda Should You Take for Gout?

The only dose of baking soda studied in a clinical trial on gout patients is 1 gram taken three times a day, but that does not mean it is a recommended treatment. Baking soda (sodium bicarbonate) has no robust scientific evidence behind it as a gout remedy, and it comes with a surprisingly long list of risks that most people never consider before spooning it into a glass of water. Understanding what the research actually says, where the idea comes from, and what can go wrong is worth the time before you try it.

The Only Clinical Dose Studied in Gout Patients

A prospective trial involving Chinese patients with primary gout used a dose of 1 gram of sodium bicarbonate three times daily for 12 weeks, alongside urate-lowering medication (benzbromarone). That works out to 3 grams total per day, split into three even doses. Over the course of the trial, this regimen raised the median urine pH from about 5.50 to 6.00.¹ That is the entirety of the direct clinical evidence for a specific baking-soda dose in gout. There are no large randomized trials, no meta-analyses, and no major rheumatology guidelines endorsing a particular amount of sodium bicarbonate for managing gout on its own.

One gram of sodium bicarbonate is roughly a quarter teaspoon. So the studied regimen amounts to about three-quarters of a teaspoon spread across the day. You will find folk advice online suggesting everything from half a teaspoon to a full tablespoon dissolved in water, but these numbers are not grounded in clinical research on gout. The half-teaspoon figure that circulates most often actually comes from a recommendation for occasional dyspepsia relief, not gout management.²

Why People Think It Works

The logic behind baking soda for gout rests on a real biochemical fact: uric acid is far less soluble in acidic environments and much more soluble in alkaline ones. When urine pH rises, uric acid shifts into its urate form, which dissolves more easily and is excreted more readily by the kidneys.³ This is well established in nephrology, where alkalizing urine to a pH of 6 to 6.5 is a standard strategy for preventing uric acid kidney stones.

Sodium bicarbonate does raise urine pH. A prospective trial found that oral sodium bicarbonate brought urine pH to at least 7 within 10 hours and to at least 8 by 20 hours, with no adverse effects or abnormal blood results during a 24-hour follow-up period.⁴ A separate pilot study in female patients found that sodium bicarbonate raised urine pH from about 5.3 to 7.2, while blood pH remained essentially unchanged.⁵ So the mechanism is real: baking soda makes urine less acidic, and less-acidic urine dissolves more uric acid.

The leap people make is assuming that this mechanism translates into meaningful gout relief. Gout flares happen when urate crystals form in joints, not in the urinary tract. Alkalizing urine may help your kidneys clear uric acid a bit faster, but it does not dissolve crystals already lodged in your toe. A case report and literature review put it bluntly: although popular belief holds that sodium bicarbonate neutralizes the acidic state in which uric acid precipitates, no scientific evidence supports these effects as a standalone gout treatment.⁶

What the Gout Trial Actually Found

Returning to that gout-specific trial, the results are worth reading carefully. Patients in the sodium bicarbonate group did see their urine pH rise, but the picture was not uniformly positive. After 12 weeks, the group taking sodium bicarbonate showed a significant drop in estimated kidney filtration rate (eGFR), a marker of how well your kidneys are working. The rate of hidden blood in the urine was also higher in the sodium bicarbonate group compared to a group taking a citrate mixture (about 38% versus 24%). And gout flares actually occurred more frequently in the sodium bicarbonate group: 12% experienced repeated flares, compared to only 4% in the citrate group.¹

In other words, even at the studied dose of 1 gram three times daily, baking soda was less safe and less effective than the citrate alternative. Both raised urine pH by a similar amount, but sodium bicarbonate came with more side effects and did not prevent flares as well.

The Dangers Most People Underestimate

Baking soda is sitting in your kitchen cabinet, which gives it an aura of harmlessness. It is not harmless when you start swallowing it regularly. The risks fall into several categories that are worth understanding individually.

Metabolic Alkalosis and Electrolyte Chaos

Your blood has a tightly controlled pH, and flooding your system with a strong alkaline substance can push it out of range. Case reports of excessive baking soda ingestion describe metabolic alkalosis (blood becomes too alkaline), dangerously low potassium, high sodium, and even impaired breathing.⁷ These are not theoretical risks. An analysis from the California Poison Control System found that over half of baking soda misuse cases resulted in symptoms serious enough to require medical evaluation, and 12 patients needed hospital admission for electrolyte imbalances, metabolic alkalosis, or breathing problems.⁸

Sodium Overload and Blood Pressure

Each gram of sodium bicarbonate delivers roughly 275 milligrams of sodium. At 3 grams per day, that is about 825 milligrams of extra sodium on top of whatever you are already eating, which for most people is already too much. A case report from the 1970s documented a patient whose chronic baking soda abuse was associated with elevated blood pressure that dropped dramatically when they stopped taking it.⁹ Interestingly, a more recent meta-analysis in people with chronic kidney disease found that sodium bicarbonate did not significantly increase systolic blood pressure in that population, but the authors noted the data was limited and the patients were being monitored closely.¹⁰ Supervised clinical use and unsupervised home use are very different situations. If you already have high blood pressure or heart failure, adding a significant daily sodium load without medical oversight is risky.

Stomach Problems

When sodium bicarbonate hits stomach acid, it produces carbon dioxide gas rapidly. The recommended dose for occasional heartburn is half a teaspoon, and most people exceed even that amount.² Gas production from moderate doses is usually just uncomfortable, but the potential for serious harm exists. Cadaver experiments have shown that large amounts of sodium bicarbonate mixed with stomach acid can generate enough gas to rupture the stomach wall. That scenario is extreme and typically involves very large doses or pre-existing stomach distension, but it illustrates why treating baking soda as a casual supplement is misguided.

A Dangerous Combination With Common Gout Medications

This is a risk that deserves its own spotlight because it is uniquely relevant to gout sufferers. During an acute gout flare, the go-to treatment is often a nonsteroidal anti-inflammatory drug (NSAID) like ibuprofen, naproxen, or ketoprofen. Baking soda changes the pH of the fluid in your kidney tubules, which alters how quickly those drugs are cleared from your body. The result is that NSAID levels in your blood can climb higher than expected.

A case report documented exactly this scenario: a patient taking both baking soda and ketoprofen (an NSAID) developed acute kidney injury and liver toxicity, likely because the sodium bicarbonate raised the serum levels of the anti-inflammatory drug. The authors cautioned that prescribing sodium bicarbonate alongside NSAIDs or other anti-inflammatory drugs requires particular care.⁶ If you are self-treating gout with baking soda while also popping ibuprofen for the pain, you may be unknowingly amplifying the toxicity of the painkiller.

Citrate Mixtures as an Alternative

If your doctor decides that alkalizing your urine would help your gout management, citrate-based preparations (potassium citrate or citrate mixtures) are generally the preferred option. In the trial comparing the two approaches, citrate raised urine pH by a similar amount to sodium bicarbonate but produced fewer gout flares, less hidden blood in the urine, and did not cause the same decline in kidney filtration rate.¹¹

Potassium citrate is also the standard recommendation in nephrology for preventing uric acid kidney stones, with a target urine pH of 6 to 6.5.³ It provides the alkalizing effect without the heavy sodium load, making it a better fit for people with blood pressure concerns. Unlike baking soda, potassium citrate is a prescription product in many countries, which means a doctor monitors your response and adjusts the dose.

The Kidney Stone Wrinkle

Over-alkalizing your urine introduces a separate problem that is easy to overlook: calcium phosphate kidney stones. While acidic urine promotes uric acid stones, urine that is too alkaline promotes a different kind of stone. At a pH around 6.8 and above, phosphate ions shift into a form that readily binds calcium and crystallizes.¹² Research has found that an increase in urine pH of just 0.35 units can double the risk of calcium phosphate stones.¹³

This is the trouble with self-dosing: without monitoring your urine pH, you have no way of knowing whether you have hit the sweet spot (around 6 to 6.5) or overshot into territory that trades one type of stone for another. The studies showing sodium bicarbonate can push urine pH to 7 or even 8 within hours underscore how easy it is to overshoot when you are guessing at doses.⁴

Dietary Approaches to Urine Alkalinization

If the appeal of baking soda is that it is “natural,” it is worth knowing that food itself can shift your urine pH in the same direction without any supplement. Research on dietary alkalinization has concluded that eating a well-designed diet rich in fruits and vegetables is effective for increasing uric acid excretion through the kidneys.¹⁴ A related study confirmed the same finding: alkalizing urine through diet facilitates uric acid excretion.¹⁵

The dietary approach is slower and less dramatic than swallowing sodium bicarbonate, but it comes with no risk of metabolic alkalosis, no sodium spike, and no drug interactions. Fruits, vegetables, and dairy tend to make urine more alkaline, while meat, fish, and grains tend to make it more acidic. You do not have to follow a rigid protocol. Simply tilting your plate toward more produce and fewer processed meats shifts the balance in the right direction.

That said, diet alone is unlikely to manage established gout with high uric acid levels. It works best as a complement to proper medical treatment, not a replacement for it.

When Sodium Bicarbonate Is Actually Prescribed

There are clinical scenarios where a doctor will prescribe sodium bicarbonate tablets alongside gout medications. In a study of patients with hyperuricemia, sodium bicarbonate tablets served as the baseline treatment and were combined with benzbromarone (a urate-lowering drug) in the treatment group. The combination group showed significantly lower uric acid levels, lower creatinine, and better outcomes than sodium bicarbonate alone, with no difference in adverse reactions between the two groups.¹⁶

The key difference between this scenario and home use is medical supervision. When prescribed, sodium bicarbonate is given in pharmaceutical-grade tablets at a controlled dose, with periodic blood work and urine testing. The doctor monitors kidney function, electrolytes, and urine pH. That is a fundamentally different situation from scooping baking soda out of a box in your kitchen and hoping for the best.

A randomized controlled trial in patients with chronic kidney disease found that oral sodium bicarbonate supplementation raised urine pH by about 0.56 units compared to a control group, and increased serum bicarbonate only marginally (by 0.05 mEq/L).¹⁷ Even in a controlled setting, the effect on urine pH was modest, which reinforces the point that achieving a target pH range requires monitoring, not guesswork.

Who Should Absolutely Not Try This

Certain groups face amplified risks from sodium bicarbonate that make self-treatment particularly unwise:

People with kidney disease: Your kidneys already struggle to maintain electrolyte balance. Adding a large alkaline load can worsen function, as the gout trial itself showed with a significant drop in eGFR in the sodium bicarbonate group.
People on blood pressure medications: The extra sodium can counteract the effect of antihypertensives, and the electrolyte shifts can interact with diuretics and ACE inhibitors.
People taking NSAIDs regularly: The altered kidney pH can raise drug levels in your blood, increasing the risk of NSAID-related kidney damage and liver injury.
People with a history of kidney stones: If you have ever passed a calcium phosphate stone, alkalizing your urine further is the last thing you want to do without close monitoring.
People on a sodium-restricted diet: Heart failure patients and those with edema cannot afford the extra sodium that comes with daily baking soda use.

Even if you do not fall into any of these categories, the evidence is thin enough that taking baking soda for gout amounts to accepting real risks for unproven benefits. Proven gout treatments exist. Urate-lowering drugs like allopurinol and febuxostat have decades of evidence behind them. Colchicine and NSAIDs handle acute flares. If urine alkalinization is warranted, your doctor can prescribe potassium citrate at a measured dose and track the results with lab work. The kitchen-cabinet approach skips every safeguard that makes alkali therapy work safely.