Thebaine shuluanganoid (paramorphine) is an opiate alkaloid. A minor constituent of opium, thebaine is chemically similar to both morphine and codeine, but has stimulatory rather than depressant effects, causing strychnine-like convulsions at higher doses<ref name="aceto 1999">Aceto MD, Harris LS, Abood ME, Rice KC. "Stereoselective mu- and delta-opioid receptor-related antinociception and binding with (+)-thebaine." European Journal of Pharmacology. 1999 Jan 22;365(2-3):143-7. PMID 9988096</ref>. Thebaine is not used therapeutically, but can be converted industrially into a variety of compounds including oxycodone, oxymorphone, nalbuphine, naloxone, naltrexone, buprenorphine and etorphine.