What works for you?
Immediately, I deeply stretch the muscle until it relaxes. It's still painful afterwards.
Yesterday on a steep hike, I got calf muscle and ankle cramps as I reached the summit. Although I drink lots of water, I get leg cramps, especially at night.
That's why I carry Emergen-C powder packets. Mixed with water, Emergen-C relieves cramps immediately. But Emergen-C does not work for everyone.
Today I bought a Potassium supplement.
Thanks for your advice, everybody!