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.
For upset stomach, I use ginger w/green tea. Also fresh oranges or peaches, add grapes, berries frozen or fresh, squeeze lemon juice and make a smoothie. Later in the day, I mix barley juice and sprouts, raw spinach and blend it. No meats or fish during this time.