How Much Baking Soda Should You Take Pre-Workout?

The most widely studied and recommended pre-workout dose of baking soda (sodium bicarbonate) is 0.3 grams per kilogram of body weight, taken roughly 60 to 90 minutes before exercise. For someone weighing 70 kg (about 154 pounds), that works out to around 21 grams, or roughly four teaspoons of powder. That number comes from decades of sports science research, but the real-world picture is messier than a single dose recommendation suggests, because timing, gut tolerance, and the kind of exercise you do all shape whether the stuff actually helps.

The Dose That Research Supports

The International Society of Sports Nutrition has reviewed the available evidence and concluded that 0.2 g/kg of body mass is the minimum dose likely to improve performance, while 0.3 g/kg appears to be the sweet spot for ergogenic effects. Going higher, to 0.4 or 0.5 g/kg, does not seem to add further benefit and comes with a sharply increased risk of stomach problems.¹ In practical terms, if you weigh 80 kg, the recommended range is 16 to 24 grams; if you weigh 60 kg, it is 12 to 18 grams.

A dose-response study comparing 0.2 g/kg and 0.3 g/kg against a placebo during cycling to exhaustion found that both doses improved time to exhaustion, but the higher dose produced a larger gain (about 32 extra seconds versus about 20 seconds for the lower dose). The trade-off was that the 0.3 g/kg dose caused significantly more nausea after exercise compared to both the lower dose and placebo, while the 0.2 g/kg dose did not differ from placebo for any gut symptom.² So the lower dose gives you a smaller performance bump with almost no stomach trouble, and the higher dose gives you a bit more but at a real gut cost. That is the trade-off you are making.

When to Take It

The standard recommendation is to take your dose about 60 to 90 minutes before you start exercising, because that is when blood bicarbonate and pH tend to peak after ingestion.³ The idea is straightforward: you want the buffering capacity in your blood to be at its highest when the hard effort begins.

The problem is that individual responses vary wildly. One study measuring time-to-peak bicarbonate concentrations after a 0.3 g/kg dose found that peak levels occurred anywhere from 75 to 180 minutes after ingestion, depending on the person.⁴ A study in adolescent swimmers found an average time to peak bicarbonate of about 130 minutes, with a standard deviation of 35 minutes, meaning some individuals peaked well past the two-hour mark.⁵ If you are serious about using baking soda for competition, the honest advice from the research community is that you should trial it several times in training to figure out your own timing window rather than trusting the 60-to-90-minute guideline as gospel.

Which Workouts Actually Benefit

Baking soda works by buffering the hydrogen ions that accumulate during intense anaerobic effort, the ones that contribute to that burning, can’t-hold-on-any-longer feeling. That mechanism means it helps most during short, high-intensity exercise where acid buildup is the main limiter of performance.

A systematic review looking at exercise duration found that the evidence was strongest for efforts lasting four minutes or less: eleven out of twenty studies in that time range showed clear performance improvements. For efforts lasting longer than four minutes, only six of fifteen studies showed benefits.⁶ Think rowing intervals, 400-meter to 800-meter running, cycling sprints, and repeated high-intensity bouts like those in CrossFit-style workouts or team sports. The gains are real but modest for most people, typically in the range of a few percent improvement in power output or time.

Repeated sprint performance is one area where the data looks especially promising. During repeated Wingate cycling tests performed in the heat, sodium bicarbonate improved anaerobic capacity and peak power output during the second sprint, suggesting the real benefit may be in recovery between bouts rather than in the first effort itself.⁷ This makes intuitive sense: the buffer gives you a bigger margin to clear acid between efforts, so the second and third sprints don’t fall off as steeply.

For pure strength tasks, the picture is less encouraging. A study on isometric mid-thigh pull performance found no significant improvements in peak force from sodium bicarbonate, whether taken alone or combined with caffeine.⁸ This is consistent with what we know about the mechanism: a single heavy lift does not generate enough acid to be limited by buffering capacity. Baking soda shines when you are doing sustained or repeated efforts that push you into the anaerobic zone, not during brief maximal-strength work.

Resistance Training and Volume

Even though baking soda does not help you lift more weight in a single rep, there is some evidence it can help you complete more reps during higher-volume resistance training sessions. One study found that sodium bicarbonate reduced the decline in maximal rate of torque production after a fatiguing leg extension protocol by about 20% compared to placebo, meaning the muscles maintained their explosive capacity better when acid was being buffered.⁹ However, the same study followed participants for ten weeks and found that these acute session-level improvements did not translate into greater long-term training adaptations. In other words, you might get through a harder session on the day, but the extra reps may not compound into bigger muscles or strength gains over a training block.

A different eight-week study combining beta-alanine and sodium bicarbonate with resistance training did find a meaningful increase in training volume. The supplemented group increased their total number of repetitions per session by about 29%, compared to roughly 13% in the placebo group, and that extra volume did translate into greater increases in muscle cross-sectional area.¹⁰ It is hard to know how much of that result came from sodium bicarbonate alone versus the beta-alanine versus the combination, but it suggests that over longer time frames and with the right training stimulus, the extra buffering capacity can accumulate into something meaningful.

The Stomach Problem

Gastrointestinal distress is the single biggest practical barrier to using baking soda before exercise. We are talking about bloating, nausea, stomach cramping, and sometimes diarrhea. The severity tends to increase with dose, and for some people the gut problems are bad enough to wipe out any performance benefit.

The worst window for gut symptoms tends to be around 90 minutes after ingestion of the standard 0.3 g/kg dose, which inconveniently coincides with exactly when most people would be starting their workout.¹¹ A recent study on high-intensity running confirmed that standard sodium bicarbonate supplementation produced significantly higher gut symptom scores throughout exercise compared to placebo.¹² A few common strategies can help:

Lower the dose: Dropping from 0.3 g/kg to 0.2 g/kg dramatically reduces gut problems while still offering some performance benefit.
Take it with a small meal: Consuming the dose alongside food slows absorption and blunts the initial alkaline hit to the stomach, though this may also delay the time to peak blood bicarbonate.
Split the dose: Rather than taking the full amount at once, spreading it across several smaller doses over 30 to 60 minutes can reduce the peak gut symptom load.
Use capsules: Filling gelatin capsules with baking soda is a popular approach that avoids the unpleasant salty taste and may reduce initial stomach irritation compared to dissolved powder.

Enteric-Coated and Hydrogel Formulations

Because gut distress is such a common deal-breaker, researchers have been testing delivery methods designed to bypass the stomach entirely. Enteric-coated capsules are designed to survive the acidic environment of the stomach and dissolve only in the small intestine. Studies show they significantly reduce gut symptoms compared to standard gelatin capsules, with lower severity scores and fewer participants reporting any symptoms at all.¹³ A separate study confirmed these findings, reporting that enteric-coated sodium bicarbonate mitigated gut symptoms compared to standard forms.¹⁴

There is a catch. The same enteric-coated study found negligible effects on anaerobic performance, likely because the delayed release means the bicarbonate reaches the bloodstream later and possibly at lower peak concentrations than the standard form. The hydrogel formulation tested in the running study showed a similar pattern: gut symptoms were no different from placebo, but the performance data needs more research to clarify whether the ergogenic effect is preserved. So these formulations solve the tolerance problem but may weaken the performance benefit, which is a frustrating trade-off that does not yet have a clear resolution.

Stacking With Beta-Alanine

Beta-alanine is another popular supplement that targets acid buffering, though it works inside the muscle cell (by increasing carnosine levels) rather than in the blood. Because the two supplements buffer acid through different pathways, there is a logical rationale for combining them. The evidence here is genuinely interesting.

A meta-analysis examining whether combining beta-alanine and sodium bicarbonate was better than either supplement alone found that neither supplement individually produced a statistically significant ergogenic effect in the pooled data. But the combination did, with a small but meaningful improvement in exercise performance.¹⁵ A separate study on upper-body intermittent exercise found that beta-alanine and sodium bicarbonate each boosted total work done by roughly 7-8%, and the combination produced an additive 14% increase.¹⁶ The evidence looks reasonably strong that combining intracellular and extracellular buffering agents gives you more than either alone.

Stacking With Caffeine

Caffeine and sodium bicarbonate are both cheap, widely available, and individually supported by decent evidence for high-intensity exercise. You might assume combining them would be even better, but the research is mixed.

In a cycling time trial, caffeine alone and sodium bicarbonate alone each improved mean power output by a similar margin over placebo (about 2.4% and 2.6% respectively). Combining the two supplements yielded a 2.7% improvement, which was barely different from either supplement alone. The ergogenic effects were not additive.¹⁷ One study on muscular endurance found that caffeine alone improved repetitions, mean velocity, and power output in back squats, but when sodium bicarbonate was added, those caffeine-driven improvements disappeared.¹⁸ The mechanism behind that interference is not entirely clear, but it may relate to the gut distress from sodium bicarbonate dulling the central nervous system benefits of caffeine. On the bright side, one cycling study noted no negative effects of combining the two, so the combination is not harmful, just not reliably better than caffeine alone.¹⁷

Who Benefits Most (and Least)

Fitness level appears to influence how much you get out of sodium bicarbonate. A study on repeated sprint ability in soccer players found that amateurs experienced significant improvements in mean power output during later sprints, while professional players saw no effect from the same 0.3 g/kg dose.¹⁹ The authors attributed this to better-trained athletes having superior innate acid-buffering capacity, making the supplement redundant.

Highly trained swimmers present another cautionary example. One study using both acute (single dose) and chronic (multi-day loading) protocols of sodium bicarbonate found no improvement in 200-meter swim time, despite confirmed increases in blood bicarbonate and pH.²⁰ Performance in elite athletes is constrained by many factors beyond acid buffering, and the marginal contribution of supplemental bicarbonate may simply be too small to register against that backdrop.

The individual variability in blood response mentioned earlier also plays a role here. After a 0.3 g/kg dose, some people see their blood bicarbonate levels jump by as much as 12 mmol/L, while others only get about a 6 mmol/L increase.⁴ If your body is a low responder in terms of bicarbonate uptake, the performance benefit may be marginal regardless of dose or timing.

Sodium Bicarbonate vs. Sodium Citrate

Sodium citrate is sometimes suggested as a gentler alternative to baking soda that works through a similar buffering mechanism. A study in highly trained female CrossFit athletes compared sodium bicarbonate, sodium citrate, and their combination during a high-intensity workout. Sodium bicarbonate was the clear winner: performance times were faster with sodium bicarbonate alone compared to sodium citrate alone, the combination of both, and placebo. Sodium citrate alone was not significantly better than placebo.²¹ The downside is that sodium bicarbonate also produced higher gut symptom scores before exercise than both sodium citrate and placebo, which reinforces the recurring theme: the version that works best is also the one that upsets your stomach the most.

Training at Altitude or in the Heat

Two environmental conditions seem to amplify the usefulness of sodium bicarbonate. In hypoxic conditions (simulated altitude), a study on 4-km cycling time trial performance found that both a 0.2 g/kg and 0.3 g/kg dose improved performance compared to placebo, with the higher dose producing a greater benefit. Both doses also allowed full recovery of acid-base balance within 40 minutes after the effort, which the placebo condition did not achieve.²² This makes sense because reduced oxygen availability at altitude increases reliance on anaerobic metabolism, which means more acid production and more room for a buffer to help.

The heat study mentioned earlier showed a similar pattern for repeated sprints: when anaerobic exercise is performed in hot conditions, the body faces additional metabolic stress, and sodium bicarbonate’s ability to reduce that acidotic burden becomes more valuable.⁷ If you train or compete in either hot or high-altitude environments, baking soda supplementation may be more consistently beneficial than in temperate, sea-level settings.

A Practical Protocol

If you want to give pre-workout baking soda a try, here is a reasonable approach based on the research. Start with a 0.2 g/kg dose dissolved in water or packed into capsules, taken 60 minutes before training. Do this for a low-stakes session, not a race day. Pay attention to how your stomach responds and when the session “feels” different. If you tolerate the lower dose well, you can work up to 0.3 g/kg and experiment with timing, noting that your peak response might be anywhere from 60 to 180 minutes after ingestion. Choose a session built around repeated high-intensity efforts rather than a pure strength day, since that is where the benefit is most likely to show up. Pair it with a small carbohydrate-containing snack to buffer the stomach, and consider enteric-coated capsules if standard ingestion gives you problems. And remember that roughly 21 grams of baking soda also delivers about 6 grams of sodium, which is a significant dose. For most healthy people doing a hard session and sweating, that extra sodium is not dangerous, but if you have high blood pressure or kidney problems, this supplement is not for you without medical clearance.