Where does “antiepileptic” come from?

I notice there's a problem with the chain provided: it appears to show a path from "epileptic" but the headword is "antiepileptic," and the chain doesn't clearly support the "anti-" prefix development. The chain shows: - English epileptic ← French épileptique ← Ancient Greek ἀντί [anti] ← PIE h₂énti ← etc. However, "anti" in Ancient Greek means "against/opposite," not the same root as "epileptic." The chain seems to conflate two different etymological paths. I cannot write an accurate one-sentence etymology for "antiepileptic" based on this chain because: 1. The chain doesn't show how "anti-" (meaning "against") connects to "epilepsy" 2. A proper etymology would need separate chains for both morphemes Could you clarify the intended

antiepileptic (English): Acting to prevent epilepic seizures; A drug which...