My doctor wants me to start on lithium 900mg at bedtime . I'm worried that it's a little too much to start with. Also he said to get the levels drawn next month but I know most people will get them done about 5 days after starting / changing dose. Also the lab order is just for the lithium , should I get kidney and thyroid function tests? I'm just worried because I've never had any manic episodes just a lot of anger issues and some thoughts about death but not suicidal. I'm also on straterra 60mg for adhd I don't think it's woeking but he wants me to keep taking it... any info would be appreciated.