Is dextromethorphan an ssri or does it just release serotonin and then deplete it?

FormACough,ToALaugh. "Dextromethorphan is the dextrorotatory enantiomer of levomethorphan, which is the methyl ether of levorphanol, both opioid analgesics. It is named according to IUPAC rules as (+)-3-methoxy-17-methyl-9?,13?,14?-morphinan." Does that answer your question? A potent metabolite ( dextrorphan) raises the cough threshold. Nothing to do with serotonin in recommended doses. Prohibited sale to minors in CA.