Any compound, mixture, or preparation containing limited quantities of any of the following narcotic drugs is included in Schedule IV which shall include one or more non-narcotic active medicinal ingredients in sufficient proportion to confer upon the compound, mixture, or preparation, valuable medicinal qualities other than those possessed by the narcotic drug alone: (1) Not more than 200 milligrams of codeine per 100 milliliters or per 100 grams; (2) Not more than 100 milligrams of dihydrocodeine per 100 milliliters or per 100 grams; (3) Not more than 50 milligrams of ethylmorphine per 100 milliliters or per 100 grams; (4) Not more than 2.5 milligrams of diphenoxylate and not less than 25 micrograms of atropine sulfate per dosage unit; (5) Not more than 100 milligrams of opium per 100 milliliters or per 100 grams, or not more than 5 milligrams per dosage unit; and (6) Not more than 1 milligram of difenoxin and not less than twenty-five micrograms of atropine sulfate per dosage unit. Source: SL 1970, ch 229 , § 8 (d) (1); SDCL Supp, § 39-17-68; SL 1980, ch 240 , § 3; SL 1981, ch 261 , § 2; SL 1990, ch 270 , § 3; SL 2015, ch 180 , § 6, eff. Feb. 18, 2015.