It all really depenRAB on the dose and if you have taken it before or not. But lets say if you have never taken it and you take a .25 or .50 pill, you should really start feeling it withing the first 20 min. Now if you take this on a regular basis, in order to feel anything you make have to alternate dosages or up your dosage as needed. I will take 2 mg on one day and not take any for the next 5 days and then take a .50 pill in the morning and then a .25 in the afternoon. Just whatever works really!
But for me IT WORKS AND WORKS GOOD!