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.
If you have recently had an upset stomach or diarrhea, your doctor may suggest that you limit your diet to bland foods that wonât irritate your stomach. The BRAT diet is a bland-food diet that is often recommended for adults and children. BRAT stands for B ananas, R ice, A pplesauce and T oast.