Codeine Hemihydrate useful for CWE?

[primal440]

Hello, I have a couple of questions:
Where SWIM is, there's only one brand of pills containing codeine, in hemihydrate form, each pill has 500 mg paracetamol (tylenol) and 60 mg codeine. As most texts regarding Cold Water Extraction refer to codeine sulfate, would it make a differnece if its in Hemihydrate form? Should the technique work the same way?

And also, does tolerance to codeine develops so quickly that after taking about 300 mg one night, the next night SWIM wont reach the same plateau if it takes the same dose??

Thanks in advance, bye.