California Governor Signs AB 2030, Restricting Minors' Access to Diet Supplements

Editor’s Note: This article has been updated on September 29, 2026, to include statements from the Council for Responsible Nutrition.

California Governor Gavin Newsom signed Assembly Bill 2030 (AB 2030) on September 28, prohibiting the sale of over-the-counter (OTC) diet pills and dietary supplements for weight loss or muscle building to anyone under 18.¹ Authored by Assemblymember Josh Lowenthal, the bill was among 10 health-related measures the governor signed the same day.

The governor's office said nonprescribed, medically unapproved products of this type can cause harmful side effects and are frequently mislabeled or contaminated with ingredients such as steroids. It cited figures indicating that nearly 1 in 10 adolescents have used such products and that youth who use OTC diet pills are 6 times more likely than nonusers to be diagnosed with an eating disorder within 3 years.

What Did the Bill Contain Before Signing?

The announcement does not describe how the law works in practice, though Nutritional Outlook's earlier coverage, published July 10 after the Senate Judiciary Committee advanced the bill on June 30, described the version under consideration at the time.²

That version covered any dietary supplement under 21 U.S.C. 321(ff) whose label, marketing, or other representations present it as intended for weight loss or muscle gain, and it allowed courts to weigh context beyond label text. Retailers and delivery sellers could not sell or distribute covered products to minors without a valid prescription. Retailers would need to check identification for purchasers whose apparent age is not clearly above 18. Delivery sellers would need to collect a purchaser's name, date of birth, and residential address, verify them against an independent commercial database, and require an adult signature and photo identification at delivery. Enforcement would occur through civil action rather than criminal penalties. The attorney general, county counsel, or city attorneys could seek injunctions and civil penalties of up to $1,000 per violation, plus attorney's fees and costs for prevailing plaintiffs.

The governor's announcement describes the restriction in general terms. The enforcement provisions and effective date described in earlier coverage are not confirmed in the announcement.

How Has the Supplement Industry Responded?

Following the signing, Carlos I. Gutiérrez, vice president of state and local government affairs of the Consumer Healthcare Products Association (CHPA), said the association is disappointed that the enacted law does not better balance protecting minors with preserving adult access to safe, beneficial products.³ “We remain concerned that the law’s broad criteria could restrict access to dietary supplements containing ingredients with legitimate uses beyond weight loss or muscle building, including ingredients widely found in products that support general health, nutrition, and wellness,” Gutiérrez stated. “Throughout the legislative process, CHPA worked constructively with lawmakers to address these concerns. We remain committed to working with California policymakers and public health officials on approaches that protect young people while preserving appropriate access and choice for adult consumers.”

The Council for Responsible Nutrition (CRN) also expressed disappointment in a September 28 statement.⁴ Steve Mister, CRN's president and CEO, said protecting young people from eating disorders is a shared goal but should rely on evidence rather than broad restrictions on lawful products. CRN said the law lets courts consider implied claims, statements about metabolism or strength, and product placement when deciding whether a supplement is covered, and its veto request warned that this could reach fiber, protein, general wellness products, and multivitamins. The group had urged lawmakers to limit restrictions to products the California Department of Public Health links to specified health conditions. It also said the law closely tracks a 2023 New York statute that CRN has asked the U.S. Supreme Court to review on First Amendment grounds.

“We did not simply object to this legislation,” Mister stated. “We pressed for a better, more defensible approach. Our position has been consistent: identify the actual risk and address it directly. Responsible companies should not have to navigate an uncertain boundary between ordinary nutrition claims and age-restricted products, and consumers should not be left to assume that a sales restriction is proof a product is unsafe.”

During the bill’s legislative process, AHPA had also argued that ingredients such as protein, vitamin D, and creatine relate to muscle development or metabolism, so products not typically viewed as weight-loss or muscle-building supplements could be covered based on ingredients alone.

A predecessor bill, AB 1341, was vetoed in 2022 over regulatory execution concerns, and a California Department of Public Health workgroup subsequently informed the current framework.

What Other Health Bills Were Signed?

The governor also signed AB 2244, which creates a certification standard and front-of-package label for non-ultraprocessed foods, with in-store placement intended to improve access. The governor's office described it as a voluntary standard modeled on the USDA Organic label. The bill follows AB 1264, signed in 2025, which made California the first state to define ultraprocessed foods and set a timeline for phasing them out of schools.

The package also includes added-sugar menu warnings (SB 869), a nutrition standard for one children's meal at chain restaurants (SB 977), diaper ingredient disclosure (AB 1901), and vape restrictions (AB 762 and AB 2667).

References

1. Office of Governor Gavin Newsom. Governor Newsom signs legislation creating non-UPF label, other health bills advancing California's nation-leading healthcare strategy. September 28, 2026. Accessed September 28, 2026. https://www.gov.ca.gov/2026/09/28/governor-newsom-signs-legislation-creating-non-upf-label-other-health-bills-advancing-californias-nation-leading-healthcare-strategy/
2. McEvoy E. California advances Assembly Bill 2030 on age restrictions for weight-loss and muscle-building supplements. Nutritional Outlook. July 10, 2026. Accessed September 28, 2026. https://www.nutritionaloutlook.com/view/california-bill-2030-age-restrictions-weight-loss-muscle-building-supplements
3. Consumer Healthcare Products Association. CHPA statement on California AB 2030. Press statement. September 28, 2026.
4. Council for Responsible Nutrition. CRN cautions California consumers: new unfounded age restrictions on array of dietary supplements will limit access and restrict free speech. September 28, 2026. Accessed September 29, 2026. https://www.crnusa.org/newsroom/crn-cautions-california-consumers-new-unfounded-age-restrictions-array-dietary-supplements