Lact?ol fort? is a patented formula consisting of heat-treated Lactobacillus LB and its byproducts, which are made into fast-acting and stable postbiotic. It does not contain Western chemical drugs and it is beneficial for gastrointestinal health. It is also an effective postbiotic for treating diarrhea in children and adults. It helps relieve various intestinal problems, including acute and frequent diarrhea, sensitive stomach, glass gut, antibiotic-associated diarrhea, and gut microbiota imbalance. Lact?ol is produced in France with a hundred years of history and has been adopted by private hospitals in Hong Kong for 30 years. It has been recommended by the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition and received an A-grade recommendation from the Hong Kong Journal of Pediatrics. Pregnant women and infants can use it safely.