Creatine-
 

How much dextrose is a good amount to add with 5g creatine?

try 25-30g

i dont use dextrose personally but i know that the people who ive talked to about it use around 25 grams depending on the person

Or just use some grape juice :)

what brands r good for creatine?

From what ive learned here is any creatine monohydrate is good but i heard good things about Problab, Opimum Nutri, but definately stay away from muscletech :)

Primaforce and MRM got some good shit too, I just buy whichever is cheaper. Currently I am also using Bulk CEE.