Nitro works almost instantly--really amazing. You put a tiny pill under your tongue. In 30 sec to one minute, the chest pain eases and you get a pounding migraine headache in return.
IMDUR was worse: it gives a 24-hour pounding migraine, which, when it subsides, means you have to take another dose.
No thanks. I am glad I am now off both drugs. Incredible when needed but the side effect is nasty.
--Boris