I second what Kori said. Medications can often have a main classification but also be used for other treatments as well. I have often been on anticonvulsants for seizure control which I found out were also used for mood stabilizers. I wouldn't put too much stock into a medication's main classification. I was on a sleeping med which was classified as an antipsychotic also. What matters is that it treats what you suffer from and the medication matches your ailments.