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No. 10699598
United States Court of Appeals for the Ninth Circuit
Bubak v. Golo, LLC
No. 10699598 · Decided October 9, 2025
No. 10699598·Ninth Circuit · 2025·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
October 9, 2025
Citation
No. 10699598
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS OCT 9 2025
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
VINCENZZA BUBAK, individually and on No. 24-492
behalf of all others similarly situated, D.C. No.
1:21-cv-00492-DAD-AC
Plaintiff - Appellant,
MEMORANDUM*
v.
GOLO, LLC, a Delaware Limited Liability
Company,
Defendant - Appellee.
Appeal from the United States District Court
for the Eastern District of California
Dale A. Drozd, District Judge, Presiding
Argued and Submitted February 3, 2025
Submission Vacated February 7, 2025
Resubmitted April 24, 2025
Pasadena, California
Before: WARDLAW, CALLAHAN, and HURWITZ, Circuit Judges.
Concurrence by Judge CALLAHAN.
Vincenzza Bubak filed a putative class action alleging that Golo, LLC
violated California law through its marketing and distribution of a dietary
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
supplement. Bubak asserted violations of California’s Unfair Competition Law
(“UCL”), which permits suit by private parties who have suffered an injury as a
result of “any unlawful, unfair or fraudulent business act or practice.” Cal. Bus. &
Prof. Code §§ 17200, 17204. Bubak’s UCL claim was premised on Golo’s alleged
violation of the Federal Food, Drug, and Cosmetic Act (“FDCA”), “as
incorporated into California law in the Sherman Food, Drug, and Cosmetic Law,
Cal. Health & Safety Code §§ 110100 et seq.” (“Sherman Law”).
After we decided Nexus Pharmaceuticals, Inc. v. Central Admixture
Pharmacy Services, Inc., 48 F.4th 1040 (9th Cir. 2022), the district court dismissed
the complaint. Bubak timely appealed.
We have jurisdiction under 28 U.S.C. § 1291 and review the dismissal de
novo, taking all factual allegations in the complaint as true and construing “the
pleadings in the light most favorable to the nonmoving party.” Est. of Bride v.
Yolo Techs., Inc., 112 F.4th 1168, 1175 (9th Cir. 2024) (internal quotation marks
and citation omitted). We affirm.
1. The FDCA expressly prohibits private enforcement. 21 U.S.C. §
337(a)–(b). In Nexus, the plaintiff sought to avoid this prohibition by bringing
claims under the UCL and other state laws that “incorporate” the FDCA. 48 F.4th
at 1047. We explained, however, that these claims are preempted because they
“rest upon a violation of the FDCA,” id. at 1044, and proceedings to enforce or
2 24-492
restrain violations of the FDCA “must be by and in the name of the United States,
not a private party,” id. at 1049.
Bubak’s claims face the same problem. She asserts that she may sue under
the UCL because the FDCA is “incorporated into” the Sherman Law and Golo
violated § 403(r) of the FDCA by representing that its dietary supplement can
mitigate or prevent a disease. See 21 U.S.C. § 343(r)(6). Bubak’s UCL claim
therefore necessarily requires litigating “the alleged underlying FDCA violation,”
Nexus, 48 F.4th at 1049, and the “plain text of the FDCA leaves that determination
in the first instance to the FDA’s balancing of risks and concerns in its
enforcement process,” id. at 1050.
2. Bubak’s attempts to distinguish Nexus are unpersuasive. Although
Bubak argues that “Nexus did not address the Sherman Law,” the UCL claim in
that case rested on an alleged violation of the Sherman Law. See Case No. 8:20-
cv-01506, Dkt. 13 at ¶ 90; id. ¶ 15 (“Defendants are engaged in unlawful and
unfair business and trade practices because Defendants are compounding and
selling drugs in violation of the Sherman Law”); id. ¶ 46 (“California’s Sherman
Law incorporates the FDCA’s requirement that pharmaceutical manufacturers
must obtain approval before selling a new drug.”).
Bubak also argues that Nexus is distinguishable because it concerned drug
regulations. But Congress’s preemption of a state’s food labeling regulations that
3 24-492
are “not identical to” FDCA requirements mirrors Congress’s preemption of a
state’s drug regulations that are “different from, or in addition to” FDCA
requirements. Compare 21 U.S.C. § 360k, with 21 U.S.C. § 343-1. As the district
court correctly noted, Nexus “did not limit its holding to [the pharmaceutical]
context.”
Finally, Bubak argues that Nexus concerned fraudulent statements made to
the FDA while her claim turns on misrepresentations made to consumers. But
what matters is whether the plaintiff brings a state law claim that exists “solely by
virtue of the FDCA.” Buckman Co. v. Plaintiffs’ Legal Comm., 531 U.S. 341, 353
(2001).
3. Bubak also argues that Davidson v. Sprout Foods, Inc., 106 F.4th 842
(9th Cir. 2024), decided during the pendency of this appeal, requires reversal. The
plaintiffs in Davidson brought a claim under California’s UCL alleging that Sprout
Foods violated the Sherman Law by including nutrition information on baby food
in violation of FDA regulations. See id. at 846. This claim “fundamentally
differs” from the claim in Nexus because it does not “require litigating” questions
that are “reserved for the FDA,” because the violation was plain. Id. at 849. As in
Nexus, further analysis is needed to determine whether Golo’s marketing actually
violated the FDCA.1 Because the FDCA preempts private suits seeking judicial
1
Golo’s motion for initial hearing en banc is DENIED. Dkt. 26.
4 24-492
resolution of such questions, this claim is preempted.
AFFIRMED.
5 24-492
FILED
Bubak v. Golo, No. 24-492 OCT 9 2025
MOLLY C. DWYER, CLERK
CALLAHAN, Circuit Judge, concurring: U.S. COURT OF APPEALS
I concur in the judgment because Bubak’s state law claims are preempted by
the Federal Food, Drug, and Cosmetic Act (“FDCA”). Although the issue is not
critical to our disposition of this appeal, I write separately to note my disagreement
with the majority’s attempt to reconcile our opinions in Nexus Pharmaceuticals,
Inc. v. Central Admixture Pharmacy Servs., Inc., 48 F.4th 1040 (9th Cir. 2022),
and Davidson v. Sprout Foods, Inc., 106 F.4th 842 (9th Cir. 2024), and to suggest
that in the appropriate case we should overrule Davidson’s limitation on the
FDCA’s prohibition of private actions to enforce the FDCA. Judge Collins in his
dissent got it right: “a private claim based on state law that has no substantive
content other than a parasitic copying of the FDCA’s requirements is impliedly
preempted.” Davidson, 106 F.4th at 857 (Collins, J., dissenting).
I
The tension between Nexus and Davidson is apparent. In both, plaintiffs
alleged violations of Sherman Law provisions that “incorporate” the FDCA. See
Nexus Compl. ¶ 46, Davidsons’s Compl. ¶ 62. The court in Nexus held these
allegations impliedly preempted because they are simply a roundabout way to
claim violations of the FDCA, which § 337 prohibits. Nexus, 48 F.4th at 1048; id.
at 1050 (“[T]he claim is that a manufacturer is harmed economically because the
defendant violated the FDCA. The purported state law violation is of a law that
says in substance ‘comply with the FDCA,’ not a traditional common law tort.”).
The Davidson majority held the opposite. Davidson, 106 F.4th at 851 (“Statutory
causes of action to enforce identical state standards that Congress permitted must
also survive implied preemption.”).
The Davidson majority understandably sought to distinguish its case from
Nexus. They did this by saying the plaintiff in Nexus asserted a Sherman Law
claim that “would require litigating whether . . . an FDCA violation had occurred,”
which is “a task reserved for the FDA,” Davidson, 106 F.4th at 849, and that the
Davidsons were “claiming violations of California law, the Sherman Law, not the
federal FDCA.” Id. This distinction ultimately fails, however, because the
plaintiffs in Davidson also asserted a Sherman Law claim that “would require
litigating whether . . . an FDCA violation had occurred,” id., namely, whether
Sprout Foods made “nutrient content claims” in violation of the FDCA. See, e.g.,
Davidsons’s Compl. ¶ 62 (“Defendant has violated 21 U.S.C. § 343(a), and the
standards set by FDA regulations, including, but not limited to, 21 C.F.R. §§
101.13(b), 101.13(c), which have been incorporated by reference in the Sherman
law, by including impermissible nutrient content claims on the labels of foods
intended for children less than 2 years of age.”).
2
The distinction fails for the additional reason that the plaintiff in Nexus—
like the plaintiffs in Davidson—was “claiming violations of California law, the
Sherman law, not the federal FDCA.” Davidson, 106 F.4th at 849. See, e.g.,
Nexus Compl. ¶ 90 (“Defendants have violated the UCL by engaging in the
unlawful business practice of marketing, selling, and distributing their products in
violation of the California Sherman Law.”).
II
Today’s memorandum disposition doesn’t do any better distinguishing
Nexus and Davidson. Tellingly, the memorandum disposition does not endorse the
Davidson panel’s reasoning, and instead says that in Davidson, the Sherman Law
“violation was plain,” Mem. Dispo. at 4, so did not require litigating questions that
are “reserved for the FDA,” id. (quoting Davidson, 106 F.4th at 849). The
memorandum disposition then goes on to hold that in both this case and in Nexus,
the alleged violation was not “plain” and that “further analysis is needed to
determine whether Golo’s marketing actually violated the FDCA.” Id.
There are a few issues with this approach. For starters, the FDCA does not
carve out a “plain violation” exception to its bar on private enforcement. The
FDCA clearly states that “all such proceedings for the enforcement, or to restrain
violations, of this Act shall be by and in the name of the United States,” 21 U.S.C.
§ 337(a), or “[a] State,” id. § 337(b). See Rotkiske v. Klemm, 589 U.S. 8, 14 (2019)
3
(“It is a fundamental principle of statutory interpretation that absent provisions
cannot be supplied by the courts. To do so is not a construction of a statute, but, in
effect, an enlargement of it by the court.”) (cleaned up).
Second, there is no principled basis for concluding that some FDCA
violations involve litigating questions “reserved for the FDA” while others do not.
Mem. Dispo. at 4. Congress made the FDA “the primary enforcer of the FDCA,”
Kroessler v. CVS Health Corp., 977 F.3d 803, 809 (9th Cir. 2020), so all alleged
violations of the FDCA require litigating questions “reserved for the FDA.”
Finally, even if there were a “plain violation” exception hidden in § 337, this
wouldn’t distinguish the present appeal from Davidson. The alleged FDCA
violation in Davidson required us to look at Sprouts Food packages and to decide
whether Sprouts Food made “nutrient content claims” in violation of federal
regulations. 21 C.F.R. § 101.13(b)(3). Here, the alleged FDCA violation requires
us to look at Golo’s website and decide whether Golo is making “implied disease
claims” in violation of federal regulations. 21 C.F.R. § 101.93(g). There is no
meaningful distinction between the two cases in this respect.
III
4
Notwithstanding the tension between Nexus and Davidson, they are arguably
not irreconcilable, but for different reasons than those in the Davidson opinion and
today’s memorandum disposition.1
Recall that plaintiffs may not allege violations of Sherman Law provisions
that “exist solely by virtue of the FDCA.” Buckman Co. v. Plaintiffs’ Legal
Comm., 531 U.S. 341, 353 (2001). All of the alleged Sherman Law violations in
Nexus fall into this category. The alleged Sherman Law violations in Davidson did
not. In Davidson, the plaintiffs alleged that Sprout Foods violated certain Sherman
Law provisions that “predate the enactment of the Sherman Law.” Davidsons’s
Compl. ¶ 26. For example, plaintiffs alleged that Sprout Foods violated the
“advertising provisions of the Sherman Law.” Id. ¶ 120(ii); see Cal. Health &
Safety Code §§ 110390, 110395, 110398, 110400. These state laws predate, and
thus exist independently of, the federal law at issue in that case. Cf. Buckman, 531
U.S. at 353. See Comm. On Children’s Television, Inc. v. Gen. Foods Corp., 673
P.2d 660, 668 (Cal. 1983) (explaining how, before enactment of the NLEA, the
Sherman Law prohibited “false, unfair, misleading, or deceptive advertising”).
Accordingly, plaintiffs’ Sherman Law claims based on these provisions were not
impliedly preempted. See Caplinger v. Medtronic, Inc., 784 F.3d 1335, 1340 (10th
1
I therefore join the denial of Golo’s motion for initial hearing en banc.
Mem. Dispo. at 4 n.1.
5
Cir. 2015) (Gorsuch, J.) (“[W]e must ask whether [the state claim] exists ‘solely by
virtue’ of the federal statutory scheme (unacceptable) or ‘predates’ the scheme
(acceptable).”); id. at 1352 (Lucero, J., concurring in part) (a state law claim is not
impliedly preempted if it “predate[es] the FDCA, and would exist in the absence of
the Act.”) (citation omitted).
However, the Davidson plaintiffs also alleged that Sprout Foods violated
certain Sherman Law provisions that did not “predate,” or exist independently of,
the FDCA, Caplinger, 784 F.3d at 1340. For example, the plaintiffs alleged that
Sprout Foods violated a Sherman Law provision that “[a]ny food is misbranded if
its labeling does not conform with the requirements for nutrition labeling as set
forth in [the FDCA].” Cal. Health & Safety Code § 11065. This provision
necessarily exists “solely by virtue of the FDCA,” Buckman, 531 U.S. at 353, and
would necessarily “require litigating whether . . . an FDCA violation has
occurred,” Davidson, 106 F.4th at 849. See also, e.g., Davidsons’s Compl. ¶ 3
(alleging that Sprout Foods “misbrands its baby and toddler food products by
making nutrient content claims on the product packages that are strictly prohibited
by the [FDA].”).
Thus, Nexus and Davidson may be reconciled on the ground that at least
some of the Sherman Law provisions alleged in Davidson predate and exist
independently of the FDCA. In Nexus, and here, the opposite is true: all of the
6
alleged Sherman Law violations “exist solely by virtue of the FDCA.” Buckman,
531 U.S. at 353.
IV
The Davidson majority departed from Nexus and created an intra-circuit split
when it held that “[s]tatutory causes of action to enforce identical state standards
that Congress permitted must also survive implied preemption.” Davidson, 106
F.4th at 851. The Nexus court had held just two years earlier that alleging
violations of “identical state standards” to the FDCA unavoidably requires
litigating an alleged violation of the FDCA. Nexus, 48 F.4th at 1048 (explaining
that “a necessary element of Nexus’s [Sherman Law] claim is the alleged violation
of the FDCA”); id. at 1050 (“The purported state law violation is of a law that says
in substance ‘comply with the FDCA’”). I agree with the Nexus panel’s
determination that § 337’s prohibition of private enforcement applies to Sherman
Law provisions that “incorporate” the FDCA, and that state law claims relying on
these provisions are impliedly preempted. Id. at 1050–51.
“’[T]he purpose of Congress is the ultimate touchstone’ in every pre-
emption case.” Medtronic, Inc. v. Lohr, 518 U.S. 470, 485 (1996) (quoting Retail
Clerks v. Schermerhorn, 375 U.S. 96, 103 (1963)). Congress’s purpose in passing
the FDCA, and especially the twin NLEA and DSHEA amendments, was to
promote national uniformity and standards for the manufacture and distribution of
7
food, drugs, and cosmetics. See, e.g., 21 U.S.C. § 323-1 (“National uniform
nutrition labeling”); 21 U.S.C. § 379r (“National uniformity for nonprescription
drugs”). This court even recognized in Davidson that Congress enacted the NLEA
and DSHEA “to provide nationally uniform standards for nutrition labeling . . . to
displace disparate state standards.” Davidson, 106 F.4th at 845. Permitting private
enforcement of the state laws that “exist solely by virtue of the FDCA,” Buckman,
531 U.S. at 353, frustrates the goal of national uniformity, and raises the prospect
for inconsistent application of the FDCA through the guise of “identical state
standards.” Cf. Davidson, 106 F.4th at 851. These state law claims are therefore
preempted by the FDCA’s bar on private enforcement. 21 U.S.C. § 337.
The enforcement scheme outlined in § 337 reflects Congress’s concern for
national uniformity. Section 337(a) reserves enforcement of the FDCA to the
federal government, and § 337(b)(1) carves out an exception for States to bring
enforcement actions for food-related violations “if the food that is subject of the
proceedings is located in the States.” The exception in subsection (b)(1) is then
limited by subsection (b)(2), which provides that States cannot commence
proceedings until “after the State has given notice to the Secretary [of Health and
Human Services],” id. at § 337(b)(2)(A)-(B), and even after notice is given, cannot
commence proceedings “if the Secretary is diligently prosecuting a proceeding in
court pertaining to such food,” id. § 337(b)(2)(C). This means that even when
8
Congress gave States the power to enforce the FDCA, it limited that power and
made it dependent on coordinating with the federal government. See also 58 Fed.
Reg. 2457, 2460 (Jan. 6, 1993) (“[T]he agency believes that close cooperation
between [the] FDA and the States will ensure that goals of uniformity are met
while still addressing the concerns of citizens of a State.”).
The majority in Davidson believed that § 337 “implicates only enforcement
of the federal, not enforcement of identical state requirements.” Davidson, 106
F.4th at 850. But such a reading ignores that Congress allowed States to enact
standards that are “identical to” certain FDCA standards. See 21 U.S.C. § 341. It
makes little sense to think Congress would so carefully prohibit private
enforcement of the federal standards but not be concerned with private
enforcement of identical state standards. “Federal law does not support such a
strange result.” Cf. Davidson, 106 F.4th at 849. Had Congress intended private
enforcement of state laws that are identical to the FDCA, “it would have said so
expressly, and not left the matter to mere implication.” Palmore v. United States,
411 U.S. 389, 395 (1973). Indeed, it “expressly” permitted States to enforce state
laws that are identical to the FDCA. 21 U.S.C. § 337(b). Congress’s decision to
omit private enforcement of these identical standards should be respected. Cornell
v. Lima Corporate, 988 F.3d 1089, 1099 (9th Cir. 2021) (reading Congress’s
“omission to be intentional”).
9
The Davidson majority did not understand why Congress would allow States
to have food labeling requirements that are “identical to” FDCA requirements, 21
U.S.C. § 341-a, while at the same time not allow individuals in that State to
enforce the identical requirements. Davidson, 106 F.4th at 849 (“There is no reason
we can perceive why Congress would permit states to enact particular legislation
and then deny enforcement by their citizens.”). But there are a number of reasons
why Congress would do this, not the least of which is to ensure consistent
application of FDCA food labeling requirements across the country. Several states
in addition to California have “incorporated” these FDCA requirements into state
law.2 If individual plaintiffs could bring suit, defendant corporations would be
subject to conflicting interpretations of federal law throughout the country; for
instance, a state court in California might find that Golo made “implied disease
claims” while a state court in Florida finds that Golo did not make “implied disease
claims.” Congress sought to prevent such inconsistent application of FDCA
standards through § 337(a)-(b).
There is yet another clue that Congress permitted States to enact parallel
food labeling requirements while not permitting private citizens to enforce those
requirements. It is axiomatic that “Congress legislates against the backdrop of
2
See, e.g., Fla. Stat. Ann. § 499.023; Conn. Gen. Stat. § 21a-110; Ariz. Rev. Stat. §
32-1962; 35 Pa. Stat. Ann. § 780-11.
10
existing law,” McQuiggin v. Perkins, 569 U.S. 383, 398 n.3 (2013), and Congress
passed the NLEA and DSHEA “against the backdrop” of state governments
enforcing their own food labeling laws. For instance, California’s Sherman Law
does not contemplate a private right of action, but instead contemplates
government enforcement of the state’s food labeling requirements. See, e.g., Cal.
Health & Safety Code §§ 111840, 111900. This settled expectation, along with
Congress’s longstanding desire for national uniformity, demonstrates Congress’s
intent to prohibit individuals from enforcing state food labeling laws that are
“identical to” the FDCA.3
V
I concur in the affirmance of the district court’s order of dismissal because
Bubak’s state law claims are preempted by the FDCA. I write separately to draw
attention to contrasting perspectives on the FDCA’s preemption of state laws that
“incorporate” the FDCA and to encourage my colleagues to, in the appropriate
case, reaffirm our holding in Nexus that the FDCA prohibits private enforcement of
any state law that incorporates the FDCA.
3
I do not take issue with California Supreme Court’s holding that “private parties
may assert UCL claims based on violations of the Sherman Law,” Farm Raised
Salmon Cases, 175 P.3d at 1084 n.5, so long as the alleged Sherman Law violation
predates, and exists independently of, the federal law at issue.
11
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS OCT 9 2025 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS OCT 9 2025 MOLLY C.
02COURT OF APPEALS FOR THE NINTH CIRCUIT VINCENZZA BUBAK, individually and on No.
03GOLO, LLC, a Delaware Limited Liability Company, Defendant - Appellee.
04Drozd, District Judge, Presiding Argued and Submitted February 3, 2025 Submission Vacated February 7, 2025 Resubmitted April 24, 2025 Pasadena, California Before: WARDLAW, CALLAHAN, and HURWITZ, Circuit Judges.
Frequently Asked Questions
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS OCT 9 2025 MOLLY C.
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