You will suddenly feel the movement of your stomach (diarrhea) when you are on the way to work or school, or before an important meeting with your clients, an examination and an appointment.

It is because of the hypersensitive peristalsis from stress.The rhythmic contraction of sooth muscles is controlled by the automatic nervous system (ANS)^*. When we feel stress, the ANS becomes hypersensitive and promotes the rhythmic contraction of soothed muscles. This is the cause of an upset stomach.

Children may feel stomach discomfort during their sleepwhen they catch a cold , drink too much juice, ice-cream or cold food, or when the temperature of the A/C is too low or the temperature change is too big.

In fact, reactions of the human nervous system are the major cause of an upset stomach and diarrhea as a result of coldness. When the body feels cold, the ANS becomes hypersensitive and promotes peristalsis to induce gastrointestinal problems.

After drinking a large glass of beer or on the next day after drinking too much, stools become loose or bowels move suddenly, and diarrhea occurs.

The intestinal track will release water after being stimulated by too much alcohol and promote vigorous peristalsis. Also, when water flushes in the intestinum crassum more than usual, this will increase the water content in stools and result in loose stools or diarrhea.

After taking in food containing more fat or sugar or stimulating food (foods contains too much seasoning), loose stools or diarrhea appears as a result of dyspepsia or malabsorption.
The intestinal track is stimulated even more easily when undigested food residues are left inside and the water content in the residues is absorbed by the intestinal track.

When one feels the bowels moving after drinking milk and the stool is loose, it is called "lactose intolerance". For people with lactase deficiency or that have difficulty to break down lactose, loose stool or diarrhea is common.

When one suddenly feels an upset stomach a few hours after a meal and must go to the toilet immediately because of diarrhea or vomiting, it is possibly a sign of food poisoning from taking in unclean food.
At this moment, one must think carefully about the possible items which cause food poisoning.

It is particularly important when it is hot and humid and bacteria can propagate easily, that food poisoning is very common. Though winter is supposed to be cold and dry, virus food poisoning cases increase.

Gastrointestinal disorders as a result of drinking water are known as water poisoning.
Water poisoning occurs when one drinks a large amount of hard water, i.e. water containing high calcium or magnesium content (inorganic), or water contaminated by bacteria or viruses.

Loose stools come out or diarrhea occurs after one has taken in hard water. This is because when magnesium ions are left inside the intestinal track, the human body will release water in the intestinal track, so the amount of water inside the intestinal loop increases. It is not a problem in Japan because most drinking water in Japan is soft water. When travelling overseas, however, one should be very careful because hard water is very common.
Additionally, due to the problems of feeder pipes, water in some foreign countries is contaminated by pathogens. Therefore, people should pay more attention to unbopiled water.

When one feels a bit of a cold, and diarrhea or vomiting occurs...
It is called the stomach flu.

Cough, running nose and fever as a result of an acute viral nasopharyngitis are the symptoms of a common cold. Our digestive track may sometimes also be affected, and diarrhea or vomiting occurs.

Upset stomach may occur as a result of unclean drinking water or food or when one is unaccustomed to the climate after traveling to a new place.
Upset\ stomach also occurs when one is under subconscious stress from a business trip.

It is particularly true when one may be unable to get a medication overseas that they are familiar with. To save you from going to the bathroom from time to time and so as not to spoil the mood of traveling or the business trip, we recommend you bring with you Seirogan, Seirogan Toi-A.

Seirogan also relieves toothaches.
This is because the JP wood creosote, major ingredient of the Seirogan, can kill pain and disinfect the root canal.
If so, you do not need to take Seirogan but put an appropriate amount of the medication on the place where toothache occurs.

However, Seirogan is a temporary pain killer and has no effect on curing tooth decay. Therefore, you must make an appointment with your dentist to cure your tooth decay.