(TW/CW: references to mental illness/suicide)
I was diagnosed with Bipolar II disorder a few years after this aired, and the med I was given (Depakote) had all the side effects Sarah mentioned and more. It even caused a permanent hormone disorder that I have to treat with even more medication. Bipolar II is tough because you do not, under any circumstances, want to take antidepressants for it--they cause full-blown psychotic mania. The only drugs they would give you in those days were anticonvulsants (epilepsy drugs) or lithium, and lithium wrecks your liver but it'll keep you from offing yourself deliberately, or unintentionally (by driving 110 mph into a tree, for example).
Unfortunately, there are still plenty of mental health sufferers today that refuse medication because they think that medication makes you "inauthentic" or "artificially happy", because they're looking at the situation backwards: they think that their depressed self is their true self and their content/comfortable self is the unnatural one, when in reality it's the opposite. Depression lies.