I took this initially after a bad flu and sinus infection last winter and I felt it really helped my energy return and gut settle post antibiotics.
A few months on I was feeling a little run down and burnt out after a stomach bug so I decided to take it again. Within a few days my gut felt much better and it gave me a spring in my step every morning. My husband even snuck a bit of it and has said to me when are you going to order more - it's mighty stuff!