The answer is it depends. There are different approaches to treating mood episodes and trying to prevent and diminish relapse. For many people with bipolar disorder, a mood stabilizer such as lithium or lamotrigine will be all that is required.
Additional medications such as antipsychotics, sleep aids, and anti-anxiety medications can be used when needed to control specific symptoms. Antidepressants are often reserved for those individuals with bipolar who have severe depressions that aren’t responding, or responding enough, to the mood stabilizer.