My boyfriend has had an irritable bowl movements for 4 days now. It started tan in color, on third day went to dark green. He has gas most the time he goes to sit on the pot. The stomach feels just a tad uneasy. He is 62 yrs old, he is up about every 2 hrs through the night and day. He just started a new med for acid reflux, Omeprazole 20mg, for not being able to swallow correctly and bad heartburn. He bdrinks alot of milk, as that is what he mixes in his drinks all day long. (Vodka, khalua, milk, from early noon, till about midnight). We think we know where the acid reflux comes from, lol, but it seems a lil long to be having the runs, any suggestions?