Originally Posted by John_V

I agree and second this. Along with water you need electrolytes. But you also need to know the difference between muscle cramps and muscle spasms. They are caused entirely by two different issues. If you can massage the affected area and the tightness subsides, it's a cramp. That being said, I also agree with taking potassium supplements. I used to have some terrible cramps, especially at night. I had my potassium levels checked to make sure they weren't on the high side and then started taking potassium supplements every morning along with one banana. Not one cramp in 5 years. I would be careful about taking high dosages of potassium without knowing your baseline level because hyperkalemia will cause cardiac arrhythmia.

As for the flushing of the face and your veins popping out, that would be a "check with your doctor" answer.