Bizi, an on-line friend of mine has found that lithium (only) is very effective in managing her Bipolar.
If you decide to try it then I think that you need to know that its therapeutic range is quite narrow - what that means is that too little will not help but too much can have adverse effects.
What that means is that, if you do decide to try it, your health care team will probably want to monitor you closely for a while.
The information here might help you with this;
Safe and effective use of lithium | Issue 1 | Volume 36 | Australian Prescriber.