Hello all I have been using codeine quite a bit. used to use 300 mg and it got me well stoned. then that amount with tolerance would hardly touch me. To cut a long story short I jumped up to 450 mg and it was happy days for a while I stopped using for a while when this amount stopped getting me off my face. My question is I am considering jumping up and taking 600 mg. With my tolerance to 450 no itching just a minor buzz will 600 mg be safe to use and what is the cap on the use of codeine before I start to hit dangerous levels. I would like to thank all answers from people in the know in advance cheers and merry xmas