Pentasa and chest pains

I took 1g of Pentasa twice a day for a week I couldn't stop urinating and I would also break out in sweat it would be running off me by the end of the week I started having terrible diarrhea it never stopped for three days if I dran water it came straight through me I had to see the consultant who told me to double the dose to 2g twice a day I managed 3 doses I was so ill I couldn't move my shoulders or my neck and I had terrible chest pains I thought I was dying I was told to stop taking them and my symptoms stopped 2 weeks later I am still weak and absolutely shattered. I wouldn't want to ever take them again