"i have been taking lithium (300mg) for about 2-3 weeks now and it has taken away my mania and leveled me out. i can see that is is working and helping me with my insomnia as well. a few down sides: it makes me nauseous when taken without food and enough water and my sex drive is non-existent now. kind of frustrating. i am also taking lamictal (200mg) and have been for about a year so i know it&#039;s not the lamictal that is causing these side effects."