For the last 5 to 6 months, I notice in my normall stool capsule like shaped green or pale green substance (often full normal capsule size and at times broken capsule shaped) coming out once in two or three days. I had a CABG done in Apollo for a three vessel disease in June 2006 and I am under constant review every 3 or 4 months and annual review check up done by Apollo regularly. Assuming that it might be indigested capsules I take like multivitamin becadexamin along with my 40mg Pantacid tab in the morning or Analgin with Clopilet I take in the afternoon after lunch, I consulted my physician and got Zincovit tab in place of Becadexamin and D Platt A75 in place of Clopilet. I am on these medicines for the last four months. I have normal food and motion habits and I do walk a lot and keep myself fit even at my 73rd year of life. When I offered my stool for analysis and culture the popular lab has found no abnormality in the same and no traces of bacteria. Can you find anything from the history I have explained above the reason for that green / pale green capsule like soft substance in my stool that appears once in two or three or four days ?