# C.R.S. § 18-18-206: 18-18-206. Schedule IV - repeal > Colorado · Statutes · Repealed URL: https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-206 ## Section - **Citation:** C.R.S. § 18-18-206 - **Heading:** 18-18-206. Schedule IV - repeal - **Jurisdiction:** Colorado - **Kind:** Statutes - **Status:** Repealed - **Text as of:** August 14, 2026 - **Source:** Compiled text - **Location:** CO Code / Title 18 / Article 18 / Part 2 / Section 18-18-206 ## Text 18-18-206. Schedule IV - repeal. (1) A substance shall be added to schedule IV by the general assembly when: (a) The substance has a low potential for abuse relative to substances included in schedule III; (b) The substance has currently accepted medical use in treatment in the United States; and (c) The abuse of the substance may lead to limited physical dependence or psychological dependence relative to the substances included in schedule III. (2) Unless specifically excepted by Colorado or federal law or Colorado or federal regulation or more specifically included in another schedule, the following controlled substances are listed in schedule IV: (a) Any material, compound, mixture, isomers or salts or isomers, or preparation containing any of the following narcotic drugs, or their salts calculated as the free anhydrous base or alkaloid, in limited quantities as follows: (I) Not more than 1 milligram of difenoxin and not less than 25 micrograms of atropine sulfate per dosage unit; (II) Propoxyphene (dosage forms); (III) Butorphanol; (b) Any material, compound, mixture, or preparation containing any quantity of the following substances having a depressant effect on the central nervous system, including any salts, isomers, and salts of isomers of them that are theoretically possible within the specific chemical designation: (I) Alprazolam; (II) Barbital; (III) Bromazepam; (IV) Camazepam; (V) Chloral betaine; (VI) Chloral hydrate; (VII) Chlordiazepoxide; (VIII) Clobazam; (IX) Clonazepam; (X) Clorazepate; (XI) Clotiazepam; (XII) Cloxazolam; (XIII) Delorazepam; (XIV) Diazepam; (XV) Estazolam; (XVI) Ethchlorvynol; (XVII) Ethinamate; (XVIII) Ethyl loflazepate; (XIX) Fludiazepam; (XX) Flunitrazepam; (XXI) Flurazepam; (XXII) Halazepam; (XXIII) Haloxazolam; (XXIV) Ketazolam; (XXV) Loprazolam; (XXVI) Lorazepam; (XXVII) Lormetazepam; (XXVIII) Mebutamate; (XXIX) Medazepam; (XXX) Meprobamate; (XXXI) Methohexital; (XXXII) Methylphenobarbital (mephobarbital); (XXXIII) Midazolam; (XXXIV) Nimetazepam; (XXXV) Nitrazepam; (XXXVI) Nordiazepam; (XXXVII) Oxazepam; (XXXVIII) Oxazolam; (XXXIX) Paraldehyde; (XL) Petrichloral; (XLI) Phenobarbital; (XLII) Pinazepam; (XLIII) Prazepam; (XLIV) Quazepam; (XLV) Temazepam; (XLVI) Tetrazepam; (XLVII) Triazolam; (XLVIII) Zolpidem; (c) (I) Any material, compound, mixture, or preparation containing any quantity of the following substance, including any salts, isomers of it that are theoretically possible: Fenfluramine. (II) This paragraph (c) is repealed upon removal of fenfluramine and its salts and isomers from schedule IV of the federal "Controlled Substances Act" (21 U.S.C. sec. 812; 21 CFR 1308.14). (d) Any material, compound, mixture, or preparation containing any quantity of the following substances having a stimulant effect on the central nervous system, including their salts, isomers, and salts of isomers: (I) Cathine; (II) Diethylpropion; (III) Fencamfamin; (IV) Fenpropore; (V) Mazindol; (VI) Pemoline (including organometallic complexes and chelates thereof); (VII) Phentermine; (VIII) Pipradrol; (IX) SPA ((-)-1-dimethylamino-1,2-diphenylethane); (e) Any material, compound, mixture, or preparation containing any quantity of the following substances, including their salts and isomers: (I) Modafinil; (II) Pentazocine; (III) Sibutramine; (IV) Stadol (butorphanol tartrate); l; (VI) Pemoline (including organometallic complexes and chelates thereof); (VII) Phentermine; (VIII) Pipradrol; (IX) SPA ((-)-1-dimethylamino-1,2-diphenylethane); (e) Any material, compound, mixture, or preparation containing any quantity of the following substances, including their salts and isomers: (I) Modafinil; (II) Pentazocine; (III) Sibutramine; (IV) Stadol (butorphanol tartrate); (f) Zaleplon. (3) The board may exempt by rule any compound, mixture, or preparation containing any depressant substance listed in paragraph (b) of subsection (2) of this section from the application of all or any part of this article if the compound, mixture, or preparation contains one or more active medicinal ingredients not having a depressant effect on the central nervous system, and if the admixtures are in combinations, quantity, proportion, or concentration that vitiate the potential for abuse of the substances having a depressant effect on the central nervous system. ## Nearby sections - [C.R.S. § 18-18-201 18-18-201. Authority to control](https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-201.md) - [C.R.S. § 18-18-202 18-18-202. Nomenclature](https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-202.md) - [C.R.S. § 18-18-203 18-18-203. Schedule I](https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-203.md) - [C.R.S. § 18-18-204 18-18-204. Schedule II](https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-204.md) - [C.R.S. § 18-18-205 18-18-205. Schedule III](https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-205.md) - [C.R.S. § 18-18-206 18-18-206. Schedule IV - repeal](https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-206.md) - [C.R.S. § 18-18-207 18-18-207. Schedule V](https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-207.md) --- Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_CO_T18_A18_P2_S18-18-206. Check the current official text before relying on it. Not legal advice.