Which course should I do after completing Dpharmacy?

You should do B.Pharm. It will add feather in your cap. You should have 50% in D.Pharm or 50% in 10+2 with physics, chemistry and mathematics (PCM) or physics, chemistry and biology (PCB). Some well known colleges for pharmacy are: BOMBAY COLLEGE OF PHARMACY-MUMBAI LOVELY PROFESSIONAL UNIVERSITY-JA

You can pursue B.Pharm or B.Sc. As per me, B.Pharm will be a better option.