It is unclear what to do when people with type 2 diabetes have had no or a limited glycemic response to a recently introduced medication. Intra-individual HbA1c variability can obscure true response. Some guidelines suggest stopping apparently ineffective therapy, but no studies have addressed this...
Talk to your doctor about a DDP-4 inhibitor such as Januvia or Onglyza or a TZD like Actos. There are injectable meds you might be able to take such as Byetta or Victoza. And, don't forget about insulin, it is an option as well. Your doctor can help you will alternative medications...