No, it is not new but it has not specifically been used for BP depression until recently. T3 is a thyroid hormone. Much success with initial studies thus far for the application to BP depression. In a controlled case study a remarkable (I remember over 60%) of BP patients had a complete remission! I'll post the specific journal documented article tomorrow. (Sorry too tired to access my sources tonight). It's not a "sexy" drug, that is one that is heavily marketed and promoted by Big Pharma. It's cheap! It is not psychcotropic, nor does it work on the brain via neuro-transmitters. It effects metabolism. What I understand from my research and my reading of the published research is that BP'ers may have a "higher requirement" for T3 than normals.