I take it for like 2 weeks. And I feel effect all this time, from day 1. It's strange, because it not declarated as a calming pill, it's more like a stimulator, but with based on giving cells more oxygen. You feel so energetic, but I notice on day 1, like wait a minute, why I'm not stuttering? I can start a dialog, muuuuch more easier, like I'm not stutter all my life. And as I say in post, this fear, what we feel in chest anytime, is completely gone. It's very strange