Shyannesmomma - Yes, a headache is a common side effect upon starting lithium therapy. This should subside within a couple weeks as your body adjusts to the drug. Hang in there!

I hope that this is of some help. - Cam

"I cannot but fear that the expectation of great advantage from the new method of treating dieases will prove a delusion. That delusion may however in some cases be of use while it lasts"
- Benjamin Franklin (1784)