Never heard of these, and have no idea what they're like. So did a little research and here are a few links for more info:
http://nofearenergydrink.com.au/
http://voices.yahoo.com/review-no-fear-energy-drink-2921742.…
http://www.amazon.com/No-Fear-Sugar-Free-16-Ounce/product-re…
I also called NQR today and they confirmed the Best Before Date is end of May 2014. At 16 cents for close on half-a-litre of drink, they may be worth a try. And the cans are resealable as well. Cheers.
dat cheeeeeep