According to federal law, pharmacies must order stock bottles of which of the following medications using CSOS or a paper equivalent?

Carisoprodol is a muscle relaxant that is classified as a Schedule IV controlled substance. As a Schedule IV drug, it does not require the same stringent ordering processes as Schedule II substances, meaning pharmacies can order it using regular prescription methods rather than CSOS or paper equivalents.

Tramadol is classified as a Schedule IV controlled substance as well. Similar to carisoprodol, the less stringent regulations surrounding Schedule IV drugs mean that pharmacies can order tramadol without using CSOS or a paper equivalent.

Buprenorphine is classified as a Schedule III controlled substance. Although it does have specific regulations, they are not as strict as those for Schedule II substances like morphine. Pharmacies may order buprenorphine using regular purchasing methods rather than the more rigorous tracking required for Schedule II medications.