I'm on the early end of my medication journey and only taking lithium. The doc says that I should be prepared for another 2-3 prescriptions down the road (no idea what they could be). $5 for lithium with my HDHP/HSA isn't a concern, but I'm already looking down the road and terrified of the unknown future prescription prices. Its open enrollment season, so I'm trying to figure out what unknown prescription costs are looming in the future. Trying to ballpark what future annual prescriptions will total.  


Anyone have any experience weighing the costs of an HDHP/HSA vs a PPO for their bipolar treatment?