Posted 12/2/2011 7:50 AM (GMT -7)
I have no experience on lithium but I might be able to help.
I don't know why you think you might be hypothyroid unless you are assuming so because of symptoms. If that is the case it may be a wrong assumption.
If you are a true vegetarian and you are having sluggish symptoms, things like fatigue, lightheadedness, balance issues, fogginess, etc, etc, then the problem can and might be your b-12 levels. Have you had them checked? One of the two most causes of b-12 issues in people is vegetarianism and gastric bypass.
Is this an option that you have looked into? If not, please do so. If your b-12 levels get too low or have been low for too long you can and will experience some really bad symptoms, symptoms that mimick hypothyroidism, fibromyalgia, lupus........
Also, please ask to have your Vitamin D levels checked too, most docs dont normally check it.
I hope this helps. Please, let me know what you find out whether it be that you are hypothyroid or that you are actually b-12 deficient. And, please feel free to ask any more questions that you may have.