My parents are planning to visit me in canada on visitor/super visa next year. My father is mildly diabetic and has high blood pressure. He daily takes medicines for diabetes and high blood pressure. While he can bring 3 months of medicine supplies while coming but if he has to stay for more than that, how can we buy these medicines in canada? Would it mean he will need to get all the tests done in canada and then get prescription from the doctors to buy these medicines in canada, and ensure all this is covered under insurance?