Mu husband is havng GI issues folloing knee replacement surgery. He is one week post op and is home. He has had explosive diarrhea which is better but continue to have lots of gurggling in his gut and explosive gas when on the toilet. This has gone on for several days. No fever, just loud rumbling of gut frequently. I am wondering if IBguard is safe for him to take. This is an OTC med which I have on hand and have taken for my IBS. His other meds include Lorsatin, amlodipine, astorvasatin, oxycodone-acetyminophen, singulair and flonase. Please advise.