(1) Any person who possesses more than fifteen grams of ephedrine, pseudoephedrine, or phenylpropanolamine, their salts, isomers, or salts of isomers, or a combination of any of those substances, is guilty of a gross misdemeanor.
(2) This section does not apply to any of the following:
(a) A pharmacist or other authorized person who sells or furnishes ephedrine, pseudoephedrine, or phenylpropanolamine, their salts, isomers, or salts of isomers upon the prescription of a practitioner, as defined in RCW 69.41.010;
(b) A practitioner who administers or furnishes ephedrine, pseudoephedrine, or phenylpropanolamine, their salts, isomers, or salts of isomers to his or her patients;
(c) A pharmacy, manufacturer, or wholesaler licensed by, or shopkeeper or itinerant vendor registered with, the department of health under chapter 18.64 RCW;
(d) A person in the course of his or her business of selling, transporting, or storing ephedrine, pseudoephedrine, or phenylpropanolamine, their salts, isomers, or salts of isomers, for a person described in (a), (b), or (c) of this subsection; or
(e) A person in possession of more than fifteen grams of ephedrine, pseudoephedrine, or phenylpropanolamine, their salts, isomers, or salts of isomers in their home or residence under circumstances consistent with typical medicinal or household use as indicated by, but not limited to, storage location and possession of products in a variety of strengths, brands, types, purposes, and expiration dates.