My grandfather was admitted in the hospital few days back for the problem in breathing. In the hospital it was diagnosed that he is suffering from the diabetes. They started giving him some injections and when they discharged him they advised two different types of the tablets. Can anyone tell me that what was the injeections for and why tablets now. I have heard that those who have diabetes they will need to take the injections for several years but then why they have out him on the tablets.