S.D. Codified Laws § 34-20D-10 (2026)
No person may possess, receive, or otherwise acquire more than nine grams of ephedrine base, pseudoephedrine base, or phenylpropanolamine base in any product, mixture, or preparation within any thirty-day period. This restriction does not apply to any quantity of product, mixture, or preparation obtained pursuant to a valid prescription drug order prescribed by a practitioner as defined in § 36-11-2 with appropriate authority. Possession of more than nine grams of a drug product containing more than nine grams of ephedrine base, pseudoephedrine base, or phenylpropanolamine base constitutes a rebuttable presumption of the intent to use the product as a precursor to methamphetamine or another controlled substance. This rebuttable presumption does not apply to:
Source: SL 2006, ch 181 , § 8.