What are the side effects of Asacol?

The more common side effects of Asacol are the following:  

•headache
•muscle or joint pain
•back pain
•nausea or vomiting
•heartburn
•burping
•constipation
•gas
•dry mouth
•sore throat and cough
•flu-like symptoms such as congestion or a runny nose
•earache
•anxiety
•sweating
•hemorrhoids
•pain in the rectum
•difficulty falling asleep or staying asleep
•acne
•some hair loss

 More serious side effects include the following:

•chest pain
•shortness of breath
•black stools
•bloody vomit or vomiting material that looks like coffee grounds
•urinating more or less than usual
•blood in urine
•confusion
•swelling of any part of the body
If you experience any of these symptoms, contact your doctor immediately.