Unlike the MPharm, there will be no clinical component in the MPharmSci, and no pharmaceutical law and no dispensing/compounding. Other than that there will be quite a few courses in common. The rest of the time on the MPharmSci will be made up with additional pure science courses most likely more advanced medicinal or pharmaceutical chemistry or sciences related to industrial processing of drugs/medicines. As a pharmacist, you have to have the knowledge to act as a health professional in patient care, hence the need for the MPharm.