Final answer:
Mood stabilizers are the drugs that relieve symptoms during manic and depressive episodes, prevent recurrence, and do not worsen symptoms of mania or depression.
Step-by-step explanation:
The drugs that relieve symptoms during manic and depressive episodes, prevent recurrence of manic and depressive episodes, and do not worsen symptoms of mania or depression or accelerate the rate of cycling are mood stabilizers. Mood stabilizers, such as lithium, are commonly used to treat bipolar disorder. They help regulate mood, reduce the severity and frequency of mood swings, and prevent relapses.