Quick answer: Less than you think. The research that timed pickle juice on cramp used roughly 1ml per kilo of body weight, which is about 65 to 85ml for most athletes, and even that may be more than you strictly need. Because the effect works through a reflex in your mouth and throat rather than absorption into your blood, a small, concentrated hit does the job. You do not need to chug half a jar.
How much pickle juice did the research actually use?
Let's start with the numbers instead of gym-bro guesswork. In the landmark study by Miller and colleagues (2010), published in Medicine & Science in Sports & Exercise, dehydrated subjects were given pickle juice at a dose of 1ml per kilogram of body weight. For a 70kg runner that is 70ml. For an 85kg rugby player it is 85ml. At that dose, an electrically induced cramp eased in about 85 seconds, roughly 37% faster than water.
So the honest, evidence-based answer to "how much" sits somewhere around 60 to 85ml for a single hit, depending on your size. That is a shot, not a pint. Anyone telling you to neck a whole jar of gherkin brine is working off folklore, not the data.
Why you do not need much: it is a reflex, not a refill
Here is the part that changes how you think about dosing. In the Miller study, blood tests taken five minutes after drinking showed almost no change in plasma electrolyte levels. Five minutes. That is far too slow to explain relief that lands in under 90 seconds, and it tells you the effect is not about volume flooding your system with salt.
The researchers concluded the mechanism is a "neurally mediated reflex that originates in the oropharyngeal region", basically your mouth and throat, which damps down the alpha motor neurons firing the cramp. In plain terms, the sour hit trips a switch in your nervous system. This fits the leading modern theory of exercise-associated muscle cramp from Schwellnus and colleagues, which blames altered neuromuscular control rather than sweat losses. There is even research showing a mouth rinse can trigger a comparable effect to swallowing, which is the clearest sign yet that the trigger is the taste landing on receptors, not the amount going down your neck.
So why is the acetic acid the bit that matters?
The active ingredient in brine is acetic acid, the stuff behind vinegar's bite. It is a strong stimulant for TRP receptors (TRPV1 and TRPA1) that line the mouth and throat. A 2017 randomised, placebo-controlled trial in the European Journal of Applied Physiology found that orally administered TRPV1 and TRPA1 activators raised the cramp threshold frequency, meaning it took more provocation to trigger a cramp at all. That is why concentration beats volume: what you actually want is a big dose of acetic acid hitting those receptors in one go, not a large volume of weak, watery brine.
How much is in a PickleUp Pro Cramp Shot?
A single 50ml PickleUp Pro Cramp Shot is built around exactly that logic: maximum acid hit, minimum faff. Each shot delivers 1,411mg of acetic acid, plus 363mg of sodium, 21.4g of carbohydrates and 31.5mg of magnesium. On the magnesium: magnesium contributes to normal muscle function, which is a handy nutrient to have on board during a long effort. The point of the 50ml format is that it is smaller than the research dose but far more concentrated, so you get a serious acetic-acid punch without carrying a bottle or gagging down volume mid-race.
Can you drink too much pickle juice?
Yes, and it is a real consideration. Brine is high in sodium and acid, and knocking back large volumes can leave you with an upset stomach, bloating or that lovely mid-race need for a toilet. Slamming a huge amount also does not buy you more of the reflex effect, because the receptors in your mouth do not care whether you drank 50ml or 500ml. More is not better here. A measured shot when you need it beats desperately gulping brine and hoping.
If you have any medical reason to watch your sodium intake, or you are managing blood pressure or kidney issues, be sensible and check with a doctor before making brine a regular habit. For a healthy athlete, a shot at the right moment is the smart play.
How to use it in practice
Most athletes treat a single shot as one dose, taken at the first twitch or as part of a race-fuelling plan, rather than sipping it continuously. Runners, footballers, tennis and rugby players tend to carry one or two shots and reach for them when cramp threatens, because the whole appeal is a fast, concentrated hit you can take on the move. Keep it somewhere you can grab it quickly rather than buried in the kit bag, because speed is the entire point.
Want the full science on how the reflex works and why brine beats salt tabs? Read our pillar guide, pickle juice for cramps. And if you want the concentrated 50ml format the mechanism is built around, that is the PickleUp Pro Cramp Shot.
Frequently asked questions
How much pickle juice should you drink for cramps?
Research used about 1ml per kilogram of body weight, roughly 65 to 85ml for most athletes. Because the effect works through a mouth-and-throat reflex rather than absorption, a small concentrated amount such as a 50ml shot delivers the acetic-acid hit without needing to drink a large volume.
Is one shot of pickle juice enough?
For most people a single concentrated shot is treated as one dose. The mechanism is a reflex triggered by the sour taste, so a bigger volume does not add more benefit. Athletes typically take one hit when cramp threatens rather than continuously sipping.
Can you drink too much pickle juice?
Yes. Large volumes of high-sodium, high-acid brine can cause stomach upset, bloating and GI distress, and drinking more does not increase the reflex effect. Anyone monitoring sodium intake for medical reasons should check with a doctor first.
Does body weight change how much you need?
In the research the dose was scaled to body weight at about 1ml per kilo, so heavier athletes used a little more. In practice a concentrated shot delivers a strong acetic-acid hit for most people regardless of size, because the trigger is the taste on the receptors rather than a precise per-kilo volume.
References
Miller, K. C., Mack, G. W., Knight, K. L., Hopkins, J. T., Draper, D. O., Fields, P. J., & Hunter, I. (2010). Reflex inhibition of electrically induced muscle cramps in hypohydrated humans. Medicine & Science in Sports & Exercise, 42(5), 953-961.
Schwellnus, M. P., Derman, E. W., & Noakes, T. D. (1997). Aetiology of skeletal muscle "cramps" during exercise: a novel hypothesis. Journal of Sports Sciences, 15(3), 277-285.
Behringer, M., et al. (2017). Effects of TRPV1 and TRPA1 activators on the cramp threshold frequency: a randomized, double-blind placebo-controlled trial. European Journal of Applied Physiology, 117(8), 1641-1647.
Garrison, S. R., Korownyk, C. S., Kolber, M. R., et al. (2020). Magnesium for skeletal muscle cramps. Cochrane Database of Systematic Reviews, (9), CD009402.
