more efficient – it would avoid having to wait for a doctor to sign a paper prescription and then having to wait for it to reach a pharmacist at another location
yn fwy effeithlon - byddai'n osgoi gorfod disgwyl meddyg i arwyddo presgripsiwn papur, ac yna orfod aros eto iddo gyrraedd fferyllydd mewn lleoliad arall