Yuck sounds terrible! I don't know about the levels but I know your blood volume increases on lithium. I had a weird bad salty taste in my mouth that pdoc could not give me an explanation for, but I figured lithium is a salty mineral? I hated lithium so much that I quit taking it without telling pdoc. And kept going to see her for the adderall. I really thought she had the dx wrong & that I just had add. Bad idea. I'm telling you this to warn you about the adderall cuz you mentioned Ritalin before right? It's Sooo tricky, made me feel like I was finally able to have energy and get my work done & life organized. But it can cause Disastrous mood cycling in a bp person. If the 900 is making you puke, can you go back to 600 and tell pdoc at next appt. It's in a few days?