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.
Some of the best foods for an upset stomach are not actually foods, they are beverages. Drinking enough liquids, especially water, will keep you hydrated. Dehydration can lead to an upset stomach; to avoid getting an upset stomach, you need to make sure youâre drinking enough liquids. Whenever possible, you should drink clear and cold liquids such as water or soda pops that are clear of colorings and caffeine.