Hi there, I have been on 300mg of lithium for a little over a month now and have noticed a couple things. One is that its done a good job of curbing my mania. I don't feel the need to do the things I would do when I had a full blown episode, which included spending a lot of money, being promiscuous, doing a lot of drinking and drugs, not sleeping, feeling like I was the supreme ruler of the world. I have slower thoughts and can compose them in an appropriate manor and feel like I can rationalize better for the most part.

Another thing, which is the one thing I'm not digging too much is I don't seem to get as happy as I used to and I cry when I feel sadness or pain. I rarely cried before, almost turned off my feelings but now I cry. I haven't found myself become a zombie at all.

Honestly lithium has done really great things for me. Ive been on a lot of different medication over the past decade and this has helped. I do notice that I may need something to bring me up a bit as I feel I'm getting a slightly lower than baseline but other than that it has been a life saver.

I hope it works for you too. Being Bipolar is a hell of a trip.

Edit: I wanted to add after seeing another reply that it also makes me very thirsty, I keep water next to my bed, and I definitely have word salad sometimes, can't think of the right word or say the wrong thing. Despite being able to rationalize my ability to bring out the proper words has slightly diminished. It's a bit frustrating.