Drinking pickle juice has gained popularity recently as a remedy for leg cramps. While it may seem to help, it really is not the ideal solution.
Pickle juice is really just salt and vinegar. Salt is obviously helpful if your cramps are induced by low sodium -- but since our diets are generally high in sodium, this is rarely the case. And vinegar is known to help cramps on a short term basis, because acetic acid (the actual chemical that vinegar is made of) is able to donate -acetyl groups which facilitate the production of the key neurotransmitter acetylcholine, which helps your muscles function properly. There is nothing wrong with this, but since pickle juice does not get to the root of the problem, you have to keep drinking it, and it often loses effectiveness over time. The cause of cramps for most people is lack of magnesium. Unless you eat dark green leafy vegetables and nuts/seeds every day, you probably are not getting enough. And every time you sweat, you lose quite a bit of magnesium. Also stress, caffeine, and aging will increase your magnesium requirements. This is why it is more convenient for most people to take a magnesium supplement instead of forcing yourself to eat the right foods all the time. People who take the right magnesium supplement often see their cramps disappear immediately. It really is that simple.