The two substances are alogliptin and pioglitazone.Alogliptin belongs to a group of medicines called DPP Inhibitors (dipeptidyl peptidase 4 inhibitors). Alogliptin works by increasing the levels of insulin in the body after a meal and reducing the amount of sugar in the body.Pioglitazone belongs to a group of medicines called thiazolidinediones. It helps the body to use the insulin that is produced in a better way.Both of these drug groups are diabetes drugs that are taken orally.