I would see if you could get signed into Health Sciences 1LL3 – Human Biochemistry I.
this is a required course for nursing, I know of students who were signed into the second yr pharmacology for nursing, and the third year biochem for nursing which is technically a nutrition course.
I am sure there was also students signed into the second yr microbiology for nurses.
I don't know the course codes for the second and third yr courses I mentioned.
The contact person for Human Biochemistry I is Terry McCurdy
http://fhs.mcmaster.ca/nursing/faculty_mccurdy.html