Prinzmetal's Syndrome

I was diagnosed with Prinzmetal's Syndrome two months ago. I had a stent put in one of my arteries. I now take Welchol for high cholesterol, Diltiazem, Plavix and nitroglycerine. Over this time, the attacks seem to be getting even more frequent and somewhat more painful. Nitroglycerine stops the attack, however, I can't get a decent night's sleep and I almost always have residual heart pain. My doctor says that nothing more can be done, but I don't see how I can go like this. Will I eventually have a heart attack? Also, is there anything more that I can do.

[Cleveland Clinic]

I would recommend taking imdur (a long acting nitrate).  Also, instead of the diltiazem, I would consider nifedipine xl or amlodipine.  

[matrixlover]

A related discussion, Prinzmetal/Variant Angina was started.