how long does chest pains last caused by too much caffeine?

Answer 1

Agitated for about 24hrs.
For information on muscles, pain and referred pain read The Trigger Point Therapy Workbook by Davies.
Also do yourself the service of finding out the effect of caffeine on the thalamus. (if i am remembering the correct word you will cut down or cut out a lot of caffeine)

Answer 2

I don't believe that caffeine causes chest pains. But it does take 2 days for caffeine to fully leave your body. When I drink caffeine, usually my "side effects" tend to last 4-5hrs.