What vitamins are needed for the gastrointestinal tract?

Definitely B vitamins.

B1 (thiamine) helps convert carbohydrates into energy and regulates appetite
B3 (niacin) is responsible for many digestive tract functions, including the breakdown of fats, carbohydrates and alcohol. A lack of B3 causes a disorder called pellagra, with symptoms such as excessive vomiting and diarrhea.
B6 (pyridoxine) is essential for the digestion of proteins.
Biotin helps make cholesterol and recycle fats, proteins, and acids.
B12 (cobalamin) in insufficient quantities causes anaemia.

Do I need vitamins for my stomach and pancreas?

They are definitely needed! Thanks to its antioxidant properties, for many people vitamin C is associated with the immune system and prevention of colds. But its contribution to the proper functioning of the digestive system is hard to overestimate. It is involved in food processing, supports the health of teeth and gums, and promotes iron absorption.

Deficiency of vitamin D increases the risk of colon cancer. Particularly affected by vitamin D deficiency are the elderly, infants, as well as people who are obese, have liver disease and are dark-skinned.

Digestive system problems are indeed a concern for many people today. If you have digestive problems, you cannot fully participate in all kinds of daily activities. Vitamins for the stomach and intestines will help you forget about troubles like diarrhoea or conversely constipation, stomach pains, etc.

Digestive health goes hand in hand with a complex called Stomach Vitamins. Millions of people around the world take vitamins and supplements to prevent colds, and few take the necessary vitamins for the gastrointestinal tract.

Among the original Japanese vitamin and supplement complexes, which you can profitably order at Inarima-Cosme, the Kaichyo Support complex from the Fancl brand and Fancl Chlorella deserve special attention. Taking care of your digestion in advance will help you avoid many health problems in the future.