How long do you need to wait for VSL#3 to work?
Usually, VSL#3 takes about a 1 week to establish in the digestive system.
VSL research study shows that maximum bacterial colonization of the digestive tract occurs in 20 days.
This high level of colonization will maintain if you continue take VSL consistently on a daily basis.
If you disrupt daily intake, the strains in VSL#3 are able to survive in the gastro intestinal system for up to 3 weeks.