I took maths as a subject and not biology in plus two.can I still go for b-pharma?

Sure, if you work extremely hard at it.

Of course they may have additional courses you will have to take

Where are you planning on studying for this degree? Which university are you enrolled in?

If you are serious about this, you need to check the requirements of where you live. For example, I live in the state of North Dakota, in the US. There is a state pharmacy board that sets the guidelines and education requirements. One of the universities that offers the pharmacy degree ( I used to have one of the professors for my pharmacology classes) lists the required curricula, going year by year. By the time a student gets done with the program, it is about 5 years. But that is here. It may not be where you are.

Start where you live and find out the guidelines. If you are going to attend school in another area, check there.

Good luck to you.

Sure you can, although you may have some additional entry level college classes that you'll have to take.