Recommend Taisho Pharmaceutical's Oral Ulcer Patch! easy to use! ! It is a very thin piece, which does not affect drinking and eating. It should be noted that the part of the medicine is on the front, and the part that can be picked up by fingers is on the side of the transparent film, so be careful not to touch your hands when using it To the medicine surface. When you stick to the ulcer, you will feel a little plastic smell at first, but it is actually medicine, and it will disappear after a while. It can speed up the healing speed, and protect the wound from being bitten all the time. Long-term Effective.