The digestive system is something we kind of take for granteduntil its not working properly. Then it can turn your days upside down. With each capsule of Ultimate 10 Probiotic, you have 13 billion friends in the form of CFUs to help support a healthy balance of probiotics in your system. Think of CFUs as the good bacteria that help keep your digestive tract on track. Added benefit to probiotics: they promote a healthy immune system and neurotransmitter synthesis. Benefits: Supports digestion Supports intestinal health Supports a healthy immune system May help re-colonize "good" bacteria 13 Billion CFUs (Colony-forming Units)