Glutacene is a favorite mostly beause it’s has Eric Serrano’s name behind it and it comes in a grape flavor. I use it all the time. Usually half dosage is taken about 30 mins. before and then the rest sipped throughout workout (you could drink Surge afterwards). Adding sugars to the drink is optional. As for dosage, there’s several calculations but I usually muliply 20% of my present bodyweight for maximum effectiveness.