I started taking this as directed, and worked my way up to 8 drops, 3 times a day. It's so long ago that I started, I can't remember how long it took to work, but I forgot to take the bottle on holiday once, and I haven't made that mistake since!
My energy levels are better, and my digestion feels better.
I have a history of candida and adrenal fatigue, so suspect I will be taking this for a time to come.
OxyLift suited me where Colosan powder was too harsh.