Yes, my grandfather has been suffering from stomach trouble for 20 years. It is very painful to get sick. We can't bear to see it. I tried many drugs on him, but none of them worked. At ordinary times, we also make him some stomach-nourishing food, but it seems that the effect is not very good. Keep eating stomach trouble. Later, my cousin who came back from Shanghai brought back a period of Korean Shengbao Yangwei tea for grandpa to drink, and the effect really came. Grandpa said that his stomach began to feel comfortable, and we couldn't believe it. So I suggest your father try it, and it works well.