Tex. Education Code § 38.011

(a) A school district employee may not:

(1) knowingly sell, market, or distribute a dietary supplement that contains performance enhancing compounds to a primary or secondary education student with whom the employee has contact as part of the employee's school district duties; or

(2) knowingly endorse or suggest the ingestion, intranasal application, or inhalation of a dietary supplement that contains performance enhancing compounds by a primary or secondary education student with whom the employee has contact as part of the employee's school district duties.

(b) This section does not prohibit a school district employee from:

(1) providing or endorsing a dietary supplement that contains performance enhancing compounds to, or suggesting the ingestion, intranasal application, or inhalation of a dietary supplement that contains performance enhancing compounds by, the employee's child; or

(2) selling, marketing, or distributing a dietary supplement that contains performance enhancing compounds to, or endorsing or suggesting the ingestion, intranasal application, or inhalation of a dietary supplement that contains performance enhancing compounds by, a primary or secondary education student as part of activities that:

(A) do not occur on school property or at a school-related function;

(B) are entirely separate from any aspect of the employee's employment with the school district; and

(C) do not in any way involve information about or contacts with students that the employee has had access to, directly or indirectly, through any aspect of the employee's employment with the school district.

(c) A person who violates this section commits an offense. An offense under this section is a Class C misdemeanor.

(d) In this section:

(1) "Dietary supplement" has the meaning assigned by 21 U.S.C. Section 321 and its subsequent amendments.

(2) "Performance enhancing compound" means a manufactured product for oral ingestion, intranasal application, or inhalation that:

(A) contains a stimulant, amino acid, hormone precursor, herb or other botanical, or any other substance other than an essential vitamin or mineral; and

(B) is intended to increase athletic or intellectual performance, promote muscle growth, or increase an individual's endurance or capacity for exercise.