Before I came into contact with this brand of yeast lozenges, I used many NMN brands from the United States, Australia and Japan, and basically I didn't feel anything. Recently, under the recommendation of my friends, I started this brand of yeast tablets. After eating for about a month, I didn't feel anything for the first 7 days. About 15 days, I feel very light. After about a month, my skin felt much better. My husband says my skin is translucent.