In the United States, no federal agency is empowered to provide objective analysis about how cost-effective a drug treatment is. In the absence of a true neutral arbiter, insurance companies and pharmacy benefit managers funded a group called the Institute for Clinical and Economic Review (ICER) to fill that void.
There can be large benefits to countries from trading, and there is no doubt that the United States is enormously richer as a result of international trade. But that hardly means that everyone was benefitted by the patterns of trade over the last three decades, nor is it a reason to support the TPP.
You might also want to make a list of the most expensive medications that your family seems to be taking throughout the year and find a cheaper alternative. On the other hand, you just might want to choose a health insurance that covers the medication you need and the pharmacy of your choice during the next open enrollment period, thus, creating better odds than Vegas!