Gherkin juice and pickle juice are the same thing: cucumbers in a salty vinegar brine. So yes, if you have read that athletes drink dill pickle juice for cramps, gherkin juice is doing exactly the same job. The interesting part is that the research suggests the brine works through a reflex in your mouth and throat, not by topping up fluids or salts. Here is what the science actually says.
Is gherkin juice the same as pickle juice?
Pretty much, yes. "Gherkin" is just the British word for a small pickled cucumber, and "pickle" is the American one. Both sit in a brine of water, salt and vinegar (acetic acid), often with dill and a bit of sugar. So when you see American studies and marathon runners banging on about drinking dill pickle juice, a jar of gherkins from a British supermarket is the same category of thing. The brine is the bit that matters, not whether the label says pickle or gherkin.
The catch is consistency. A random jar of gherkins was made to taste nice, not to hit a specific dose of acetic acid, sodium or anything else. The vinegar strength, salt content and sugar swing wildly between brands, so "gherkin juice for cramps" out of the fridge is a bit of a lucky dip.
Does gherkin juice help with cramps?
This is where it gets interesting. In a well known 2010 study, Miller and colleagues gave hydrated and dehydrated men an electrically induced cramp in the toe, then had them swallow either pickle juice or water. Cramps lasted an average of about 85 seconds after pickle juice, compared with roughly 134 seconds after water and around 153 seconds with no fluid at all. That is cramp time cut by more than a third, off a single small mouthful.
Here is the kicker: the volume was tiny, about 1 ml per kg of body weight, so roughly 74 ml, and it was still sloshing around in the stomach. There was no way the fluid or electrolytes had been absorbed, reached the bloodstream and got to a cramping muscle in that time. Something else was going on.
How does dill pickle juice stop a cramp then?
The leading explanation is a reflex, not rehydration. The current thinking, building on Schwellnus's 1997 "altered neuromuscular control" hypothesis, is that exercise cramp is largely a nervous system problem: overworked, fatigued muscles get a dodgy signal from the nerves and lock up. It is not simply "you sweated out your salt".
The sour, sharp acetic acid in the brine is thought to fire up sensory receptors (TRP channels) in your mouth, throat and gullet. That blast of sourness sends a signal up to the spinal cord that appears to dial down the runaway nerve activity driving the cramp. In plain terms, the shock of the vinegar hitting the back of your throat seems to reset the misfiring nerves. That is why it works far too fast to be about fluid, and why the taste being genuinely unpleasant is a feature, not a bug.
Worth being straight with you: this is still a hypothesis and not every study agrees, but it is the best fit for why a mouthful of sour brine calms a cramp in under two minutes when a glass of water does bugger all.
How fast does it work and how much do you need?
In the research, relief lands inside a couple of minutes, and you do not need to neck half a jar. A small mouthful of properly sour brine is enough to hit the receptors that matter. Chugging loads of gherkin juice does not make the reflex work harder, it just gives you a stomach full of vinegar and salt and, frankly, a grim afternoon. If you want the full breakdown of the research, our pillar guide to pickle juice for cramps goes deeper.
Gherkin juice vs a proper cramp shot
You can absolutely swig gherkin juice from a jar, plenty of people do, and pickle juice made headlines courtside at the 2026 Australian Open for exactly this reason. But the two problems with jar brine are dose and dignity: you have no idea how much acetic acid you are getting, and warm cucumber water down your shorts mid game is not a great look.
That is the gap the PickleUp Pro Cramp Shot was built to fill. It is a 50 ml pineapple flavoured shot with a fixed, known dose in every one: 1,411 mg of acetic acid, 363 mg of sodium, 21.4 g of carbohydrate and 31.5 mg of magnesium. Magnesium contributes to normal muscle function. It is the same acetic acid mechanism as your jar of gherkins, just measured out, easier to stomach and small enough to keep in a kit bag rather than lugging a jar of brine to training.
Frequently asked questions
Is gherkin juice or pickle juice better for cramps?
Neither is "better", they are the same brine under two different names. What matters is how sour it is, because the acetic acid is doing the work. A tarter, more vinegary brine gives you a stronger hit than a mild, sweet one.
Can I just drink the juice from a jar of gherkins?
You can, and people do. Just know the dose is a gamble: supermarket brine is not made to a nutritional spec, so the acetic acid and salt content vary a lot between jars and brands.
Does gherkin juice replace my electrolytes?
Not really, and that is the point. The research suggests the brine works through a nerve reflex in the mouth and throat, not by replacing fluids or salts. Proper all day hydration is a separate job from a quick mouthful of brine when a cramp bites.
How much gherkin juice should I drink for a cramp?
Small. In the research a mouthful of around 70 to 75 ml was enough. More does not speed up the reflex, it just loads your gut with vinegar and sodium.
References
- Miller KC, et al. Reflex inhibition of electrically induced muscle cramps in hypohydrated humans. Medicine & Science in Sports & Exercise. 2010;42(5):953-961. PMID: 19997012.
- Schwellnus MP, Derman EW, Noakes TD. Aetiology of skeletal muscle "cramps" during exercise: a novel hypothesis. Journal of Sports Sciences. 1997;15(3):277-285. PMID: 9232553.
- Garrison SR, Korownyk CS, Kolber MR, et al. Magnesium for skeletal muscle cramps. Cochrane Database of Systematic Reviews. 2020;9:CD009402.
This article is for general information and is not medical advice. If you get frequent or severe cramps, speak to a healthcare professional.
