I'll trade doctors with you, ha!ha! I am in the "lethargic abyss" too and growing more depressed, my doc told me "NO" to any stimulants, he's afraid I can get manic, I am BPII. I am thinking of looking for another doctor cause I can't go on like this, I don't even want to wake up in the morning and getting things done lately is like a huge struggle for me. If your thyroid is imbalanced and they give you thyroid med. you should return to your normal metabolism. It is important that your thyroid bloodwork should include TSH level besides the T3 and T4. They have found many times in the past that docs. should give you meds. for T3 and T4 at the same time for the best efficiency. TSH is thyroid stimulating hormone if levels are too low or too high you may become hypothyroid or hyperthyroid. Interesting the ritalin made you tired, people with ADD/ADHD will get mellowed from it, people not having ADD/ADHD will usually get stimulated (revved) but then again everyone's system is different. Make sure you keep on your doctor

Good luck!!
"darkeyes"