http://www.medications.com/effect/view/41576 After 7 doses of Welchol I could not swallow, had severe heartburn and pressure in my chest, fatigue, and shortness of breath upon ANY exertion worsening pain in my left shoulder and pain in my left foot I felt that I was having a massive heart attack. I w Fri, 18 Sep 2009 13:11:25 -0400 http://www.medications.com/effect/view/41576?item=23101 you will probably need to wait a few days. http://www.medications.com/effect/view/41576?item=23101