Because microbes used as probiotics already exist naturally in your body, probiotic foods and supplements are generally considered safe. They may trigger allergic reactions, and may also cause mild stomach upset, diarrhea, or flatulence (passing gas) and bloating for the first few days after starting to take them.

In fact, research has shown that probiotic supplements prevent and treat certain types of diarrhea in both children and adults. Taking probiotics may help prevent and treat diarrhea by repopulating beneficial gut bacteria and correcting an imbalance in the gut microbiota.

One of the most studied probiotic strains is Lactobacillus rhamnosus GG, which has been repeatedly proven effective in reducing in the incidence of diarrhea in antibiotic-treated patients and in treating other gastrointestinal disorders [88].

Furthermore, probiotics may reduce the risk of spreading rotavirus infection by shortening diarrhea duration and volume of watery stool output and by reducing the fecal shedding of rotavirus, and they have been found useful in preventing the dissemination of hospital-acquired diarrheas.

Eating When you Have Diarrhea Cooked eggs are also OK. Use low-fat milk, cheese, or yogurt. If you have very severe diarrhea, you may need to stop eating or drinking dairy products for a few days.

The following quick treatments can help induce a bowel movement in a few hours.

1. Take a fiber supplement.
2. Eat a serving of high-fiber food.
3. Drink a glass of water.
4. Take a laxative stimulant.
5. Take an osmotic.
6. Try a lubricant laxative.
7. Use a stool softener.
8. Try an enema.