well check this video out, it claims that Quinine (which can be found in tonic water - just label, because not every brand of tonic water contains quinine), helps this condition: Cramp Remedies
Below is a list of remedies that may work:
1. Apple cider vinegar one shot followed by 12oz glass of water.
2. Tonic water or leg cramp tabs at over the counter.
3. Bottle of pedialite before bed.
4. Daily banana.
5. Coconut water.
Here is some more valuable info: CRAMPS


