I have a long flight journey, followed and preceded by lengthy bus journeys ahead and would like to have a stable stomach and intestines until I reach my destination home. I do not like public toilets, so really want to avoid the airport or the airplane ones. Of course I am not talking about urinals. I am not eating anything before and during the journey. I would like to know if there are any medicines to help in this situation? Additionally, what types of food digest slow, I could have them for my last meal?
You can eat one or two spoons of minced, not prepared coffee. It will prevent you from going to toilet for some time (few hours or even a day, depends). I tested it and it works. You can eat it with sugar if you do not like the taste.
I also heard that if you eat chocolate for cooking that will do the same but did not tested it.
Anyway make sure you go to toilet before trip. Good luck! :)
Use of a fast-acting laxative about twelve hours before your journey starts will help empty the colon. Once this is done, you won't need to "go" for twenty-four or so hours, until your colon is refilled by normal digestion. Combined with avoiding food during the journey and eating light, low-fiber foods for your last two meals before travel, this is likely to be all you need.