In vitro models for the prediction of in vivo performance of oral dosage forms.
The in vitro dissolution of carbamazepine (CBZ) was investigated using an automated artificial stomach-duodenum (ASD) model. Successful simulation of the dog physiology in the fasted state showed that the rank order of the ASD estimated bioavailabilities is as follows: Form III > Form I > dihydrate. This result is in excellent agreement with those found in literature. Additional simulations comparing different gastric transit times during fasted and fed states are also discussed.