Supplement laws in California

AB 2030 (Lowenthal)
This bill prohibits a person and a delivery seller from selling, offering to sell, or giving away as either a retail or wholesale promotion over-the-counter diet pills or dietary supplements for weight loss or muscle building, as defined, to any person under 18 years of age and requires a specified age identification check be conducted. The bill provides an exception for a person under 18 years of age who has a prescription.
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2) Requires a delivery seller, including an online retailer, who mails or ships over-the-
counter diet pills or dietary supplements for weight loss or muscle building to
a) Shall not sell, deliver, or cause to be delivered any over-the-counter diet pills or dietary supplements for weight loss or muscle building to a person under 18 years of age;
b) Shall use a method of mailing or shipping that requires both of the following:
i. The purchaser placing the delivery sale order, or an adult who is at least 18 years of age, to sign to accept delivery of the shipping container at the delivery address.
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c) Shall not accept a delivery sale order from a person without doing both of the following:
i. Obtaining the full name, birth date, and residential address of that person.
ii. Verifying the information provided in clause (i), through the use of a commercially available database or aggregate of databases, consisting primarily of data from government sources, that are regularly used by government and businesses for the purpose of age and identity verification and authentication, to ensure that the purchaser is at least 18 years of age.
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a) "Dietary supplement for weight loss or muscle building" means a dietary supplement, as defined in 21 U.S.C. 321(ff), that is labeled, marketed, or otherwise represented for the purpose of achieving weight loss or building muscle.

§ 119.1 Dietary supplements containing ephedrine alkaloids.
Dietary supplements containing ephedrine alkaloids present an unreasonable risk of illness or injury under conditions of use recommended or suggested in the labeling, or if no conditions of use are recommended or suggested in the labeling, under ordinary conditions of use. Therefore, dietary supplements containing ephedrine alkaloids are adulterated under section 402(f)(1)(A) of the Federal Food, Drug, and Cosmetic Act.

DMAA (1,3-dimethylamylamine) is an amphetamine derivative that has been marketed in sports performance and weight loss products, many of which are sold as dietary supplements. DMAA is not a dietary ingredient, and DMAA-containing products marketed as dietary supplements are illegal and their marketing violates the law.
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In 2019, the U.S. Court of Appeals for the Eleventh Circuit affirmed the lower court ruling, finding that DMAA is not a dietary ingredient and is not generally recognized as safe, and condemning and forfeiting the seized articles containing DMAA.

FDA considers tianeptine to be a substance that does not meet the statutory definition of a dietary ingredient and is an unsafe food additive.
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Because tianeptine does not qualify as a dietary ingredient, is not an approved food additive, is not GRAS, and does not meet any of the other listed exceptions to the dietary supplement definition, it is an unsafe food additive, and dietary supplements containing tianeptine are adulterated under the FD&C Act.

Phenibut is a substance that does not meet the statutory definition of a dietary ingredient.
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The products distributed by Chill6 allegedly contain, among other things, Phenibut HCl, which does not meet the statutory definition of a dietary ingredient and is an unsafe food additive.

Products consisting of or containing only pure or highly concentrated caffeine have been linked to at least two deaths in the United States in the last few years, and continue to present a significant public health threat. Many products that consist of only or primarily pure or highly concentrated caffeine are sold as dietary supplements. FDA considers some such products to be adulterated under section 402(f)(1)(A) of the Federal Food, Drug, and Cosmetic Act (FD&C Act) [21 U.S.C. § 342(f)(1)(A)], because they are dietary supplements that present a significant or unreasonable risk of illness or injury under the conditions of use recommended or suggested in the labeling or, if no conditions for use are suggested or recommended, under ordinary conditions of use.