Creatinine is transported through the bloodstream to the kidneys. The kidneys filter out most of the creatinine and dispose of it in the urine. Because the muscle mass in the body is relatively constant from day to day, the creatinine production normally remains essentially unchanged on a daily basis.
When you have an upset stomach, avoid acidic foods, he says. 1  Fatty Foods Fatty foods stimulate contractions in the digestive tract, which, surprisingly, can either slow down the emptying of the stomach and worsen constipation or speed up movement and worsen or lead to diarrhea.
Abdominal bloating and nausea related to foods you eat will typically resolve after your body has had time to digest whatever has upset your stomach. Common food intolerances include lactose and gluten. Avoid eating any foods that you determine to cause abdominal bloating and nausea. Your doctor can prescribe medications related to underlying conditions such as acid reflux or constipation. More serious disorders, such as congestive heart failure or dumping syndrome, may require prolonged treatments.