Bissenmir, it doesn't matter if it has a blue or white top.. The blue top Nan300's aren't fake/counterfeit.. again, they were the original batch put out by Ttokkyo almost 1 year ago. A few months back Ttokkyo changed the tops to the current white, plastic ones w/ "ttokkyo laboratorios" written on top.. Ausvet website is owned by Denkall Mexicana, a competitor of Ttokkyo's, that's why they have some of Ttokkyo's original batches pictured in their counterfeit section.
G69, are you stacking your Deca with anything? 300mg/week and you're only in your third week is a little early to be worried.. Give it time.