So after a long time of being a little pussy I finally decided to get my ass up and go to the pharmacy to pick up some generic Codeine with Acetaminophen and Caffeine but I heard of some drug that was used in combination with Codeine to help the body convert more of it to Morphine than it normally would but it's scheduled in the USA and Canada now.

Are there any similar substances that can be used to potentate Codeine?

things like tums, diphen, dxm, as well as a couple other things (check the opiate potentiation threads)

Strong:
Piperidines and derivatives (pharmacokinetics modifiers)
glutethimide (piperidinedione derivative)
"Half"-Strong:
carbamazepine
Unspecified:
dexamethasone (glucocorticoid)
rifampicin (bactericidal)