Our primary aim is to compare the length of NAS treatment with NMS in the two study groups - NMS/C versus NMS/P. Our secondary aims are to compare the total dosage of NMS, total length of hospital stay for NAS treatment, treatment failures and adverse effect profiles for the two study groups. We hypothesize that clonidine when compared to phenobarbital as an adjunct therapy, will have shorter length of stay, with fewer treatment failures and side effects.