There are many courses that can help you after B.Pharmacy.

MBA: MBA is one of the most sought after courses. You can study MBA in Pharmaceutical Management, Hospitality Management, Health Care, Marketing and Sales.

M.Pharmacy: You can study M.Pharmacy in various specialisations. You can appear for UGC-NET and join as a Junior Research Fellow or an Assistant Professor after your M.Pharmacy.

Other courses are:

M.Sc in Pharmaceutical Chemistry

Post Graduate Diploma in Clinical Trial Management

Clinical Research courses

Drug store Management course

Integrated Post Graduate Diploma in Clinical Research and Pharma Co-vigilence

Without all these courses also after B.Pharmacy, you can write exams like UPSC, SBI PO, Staff selection for different cadres, etc.