1. A person shall not purchase more than three thousand six hundred milligrams of pseudoephedrine, either separately or collectively, within a twenty-four-hour period from a pharmacy, or more than one package of a product containing pseudoephedrine within a twenty-four-hour period from a retailer in violation of section 126.23A.
2. A person shall not purchase more than seven thousand five hundred milligrams of pseudoephedrine, either separately or collectively, within a thirty-day period from a pharmacy or from a retailer in violation of section 126.23A.
3. A person who violates this section commits a serious misdemeanor.