Very good, I dosed 2 pills at a time. Unfortunately I'm at a point right now I'm living off coffee and stims so I'm getting desensitized to stims a bit. I try to rotate stims and compounds and that seems to help, along with some reset AD and some cold turkey days as well. I thought the beta sample was comparable to 25mg Bronkaid and 2 C2 caps, which is my all time favorite combo that I still use occasionally today. The difference was that the beta sample had a longer lasting effect, around 5-6 hours for me instead of the usual 3-4. Good stuff. Think you have a winner there.