You dont need to replace the Lucozade weekly ffs! Take no notice of the sell by date. They are actually good for about 300 years. I know a bloke who is a manager at GSK who says that sell by dates are just a way for shops to make more money out of at you.
Lol I would not be suprised tbh. Normally The week old Lucozade gets given to a mate who is hungover on a Saturday he has never complained at 8 am lol.