Hello,

Your query isn't clear, are you enquiring about appearing for UPSC, and having medical science as optional subject after BSc Physiology, if so then the syllabus of medical science is really vast, and it's equivalent to graduation level, so think about the entire duration of medical science course at ug level, it will be tough for you, only doctors choose medical science as optional subject in upsc as they are well acquainted with the syllabus, nevertheless you can go through the syllabus at UPSC website, and judge it yourself, I think you should choose subjects which you find interesting enough, there is readily availability of study materials, so keep this in mind, if you meant something else by your query please elaborate on the same by writing down in the comment box below so it can be addressed in more proper manner.