What should I do about Botany?

I'm a non-science major doing the pre-med reqs. and it looks like I'm not doing too well in Botany. Should I take the class for Credit or No Credit? It is one of my university's requirement for taking upper division bio. classes. I know some medical school don't even accept botany for fulfilling the one year bio req. Should I take for Credit and take an upper division Bio. Class thus fulfilling Med's school bio req or should I suffer with a bad grade?