Magnesium not only helps with this, but is important for your heart, and needs to balance out your other minerals, no point in taking lots of calcium if your body is starved for magnesium.   

Magnesium, and getting some potassium from orange juice or bananas (stronger and more effective than the pills) have helped the big guy, and yes, the bar of soap seems to help too. Must be something in the fumes that has an effect, I have no idea what.

Magnesium and calcium taken at night seem to promote sleep. But do ease into it, 400 mg Mg is good, but you may need to start with 100 for your gut's sake.