I have gained me this product to stay awake in my job (I work only at night). Tea, coffee and various energy drinks I've tried but the effect is usually either barely noticeable and / or of short duration, but followed by an even worse performance depth than before. At first I was skeptical but the powder seems really wonderful. After taking I not feel a lot more "lively" overexcited and the effect lasts even to long on.
On the subject of taste: Of course I would not recommend Pure guarana because of its taste, but as bad as you always hear, it is not really. Actually I would taste "earthy" call.
I take the powder with water usually easy to me. Although really anything but appetizing, since the powder does not dissolve completely ... But what can you do? Close your eyes and, I would say. The effect it is all worth it.