There are generally no grants for professional students unless u go to a public school. Usually, public schools cost less and get more federal funding, so they tend to have some grants to cover the students. However, u would still need loans because the grants can't cover everything since this is professional school, the tuition for ur professional program is more than the undergrad within the same school. However, there are some tiny grants and scholarships out there if u fit the category. There are grants for students from poor families, if u are of eskimo descent and want to work in Alaska, and etc.. However, it is nothing when compared to the tuition (2-3K at the most) Certain pharmacy organizations offer scholarships to students who fit their vision, are active members, and write a pretty good essay on why they should get the scholarship. For example, I think NCP (not sure what the organzation is) gives a 10K scholarship each year to the student who wants to own his own pharmacy, is an active member, and has the right vision for the future of independent pharmacies.
I know at ucsf, if ur gpa is high enough, they tend to give u descent amount of grant to cover ur tuition, but it won't cover everything. Private schools like usc, hmm even with a 4.00 gpa, forget it, u getting nothing, especially if they see u have some money from ur bank account from ur previous job before u enter pharm school.
If you were to do the pharmD/phd, then they are willing to pay for everything. Reason being, the school owns ur research and later on, they can sell ur research to whoever they want. They basically will make money off of u.