Is it safe to take a prenatal multi vitamin?

Well I guess technically that is up to you, so you can, but there is no reason too.(that is if by "regular vitamins" you mean a regular multivitamin) You end up taking more vitamins than you liver can process and could end up being a strain on your system. Other supplements may be fine if approved by your doctor i.e. fish oil supplements, vitamin c etc. in conjunction with your prenatal. Always consult your physician