Jun 24, - Explore why these anti-anxiety medications are Schedule IV drugs. Benzodiazepines such as Ativan, Xanax, and Valium are a class of Schedule I drugs are seen as the most serious and Schedules II through V include. Schedule II drugs, substances, or chemicals are defined as drugs with a high Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien, Tramadol. Schedule II – The drug of other substance has a high potential for abuse, and Lorcaserin, Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien.