(a) A person commits an offense if the person violates any of the provisions of § 431.021 relating to unlawful or prohibited acts. A first offense under this subsection is a Class A misdemeanor unless it is shown on the trial of an offense under this subsection that the defendant was previously convicted of an offense under this subsection, in which event the offense is a state jail felony. In a criminal proceeding under this section, it is not necessary to prove intent, knowledge, recklessness, or criminal negligence of the defendant beyond the degree of culpability, if any, stated in § 431.021 to establish criminal responsibility for the violation.
(a-1) Repealed by Acts 2007, 80th Leg., R.S., Ch. 980, Sec. 14.

(a-2) Repealed by Acts 2007, 80th Leg., R.S., Ch. 980, Sec. 14.
(b) A person is not subject to the penalties of Subsection (a):
(1) for having received an article in commerce and having delivered or offered delivery of the article, if the delivery or offer was made in good faith, unless the person refuses to furnish, on request of the department or a health authority, the name and address of the person from whom the article was received and copies of any documents relating to the receipt of the article;
(2) for having violated § 431.021(a) or (e) if the person establishes a guaranty or undertaking signed by, and containing the name and address of, the person residing in this state from whom the person received in good faith the article, to the effect that:
(A) in the case of an alleged violation of § 431.021(a), the article is not adulterated or misbranded within the meaning of this chapter; and
(B) in the case of an alleged violation of § 431.021(e), the article is not an article that may not, under the provisions of Section 404 or 405 of the federal Act or § 431.084 or 431.114, be introduced into commerce;
(3) for having violated Section 431.021, if the violation exists because the article is adulterated by reason of containing a color additive not from a batch certified in accordance with regulations promulgated under the federal Act, if the person establishes a guaranty or undertaking signed by, and containing the name and address of, the manufacturer of the color additive, to the effect that the color additive was from a batch certified in accordance with the applicable regulations promulgated under the federal Act;
(4) for having violated § 431.021(b), (c), or (k) by failure to comply with § 431.112(i) with respect to an article received in commerce to which neither Section 503(a) nor Section 503(b)(1) of the federal Act applies if the delivery or offered delivery was made in good faith and the labeling at the time of the delivery or offer contained the same directions for use and warning statements as were contained in the labeling at the same time of the receipt of the article; or
(5) for having violated § 431.021(l)(2) if the person acted in good faith and had no reason to believe that use of the punch, die, plate, stone, or other thing would result in a drug being a counterfeit drug, or for having violated § 431.021(l)(3) if the person doing the act or causing it to be done acted in good faith and had no reason to believe that the drug was a counterfeit drug.
(c) A publisher, radio-broadcast licensee, or agency or medium for the dissemination of an advertisement, except the manufacturer, packer, distributor, or seller of the article to which a false advertisement relates, is not liable under this section for the dissemination of the false advertisement, unless the person has refused, on the request of the department, to furnish the department the name and post-office address of the manufacturer, packer, distributor, seller, or advertising agency, residing in this state who caused the person to disseminate the advertisement.
(d) A person is not subject to the penalties of Subsection (a) for a violation of § 431.021 involving misbranded food if the violation exists solely because the food is misbranded under § 431.082 because of its advertising, and a person is not subject to the penalties of Subsection (a) for such a violation unless the violation is committed with the intent to defraud or mislead.
(e) It is an affirmative defense to prosecution under Subsection (a) that the conduct charged is exempt, in accordance with § 431.023, from the application of § 431.021.