Probiotics are a kind of microorganisms beneficial to human body, which can help maintain intestinal health and enhance immunity. Here are some well-known probiotic brands:

1. Abbott: Abbott is the world's leading health and nutrition company, and its probiotic products include probiotic powders and capsules for infants and adults.

2. Mead Johnson: Mead Johnson is a company focusing on infant nutrition, and its probiotic products include infant formula and probiotic powder.

3. Nestle: Nestle is a world-renowned food and beverage company, and its probiotic products include probiotic powder and capsules for infants and adults.

4. Nutrilon: Nutrilon is a brand of infant nutrition under Nestle, and its probiotic products include infant formula and probiotic powder.

5.Gaviscon: Gaviscon is a company focusing on gastrointestinal health, and its probiotic products include oral liquid and capsules.

6.Culturelle: Culturelle is a company specializing in probiotic products, including probiotic powders and capsules for adults and children.

7. Bayer: Bayer is a leading pharmaceutical and life science company in the world, and its probiotic products include probiotic powders and capsules for adults and children.

8. Colgate-Palmolive: Colgate is a world-renowned personal care product company, and its probiotic products include toothpaste and oral cleaning liquid.

9. DuPont: DuPont is a leading technology and materials company in the world, and its probiotic products include probiotic powders and capsules for adults and children.

10. Herbalife: Herbalife is the world's leading nutrition and personal care product company, and its probiotic products include probiotic powders and capsules for adults and children.