When you say because you can't use your previous credits is it because you didn't do well or that they are non-science? Some of them do take transfers..some directly into the professional phase of the program and some into the different years of the pre-pharm curriculum. But, it's hard to get in if you academically messed up, because the programs are usually intended for super bright high schoolers.
If you just did a year already and your grades are good then you can look into transferring, but the number of seats available is often dependent on how many students dropped the program..