I got them from the site below after researching PH and digestion on the net. They sent me a free sample and I have now ordered some through my local chemist (Brisbane Australia) as I tend not to order anything off the net if I can help it. They are cheaper through coral cay though at $18.00 approx for a huge role.
Thanks for your advice (and thanks Jake too). I will do what you guys said and try it after dinner. I wont be eating protein for a few more days though as I am fasting with juiced veges and garlic at the moment. I will smell real bad when I go back to work tommorrow. lol