[align=left] Syllabus

NOTE: Where it is feasible, a syllabus (headnote) will be released, as is being done in connection with this case, at the time the opinion is issued.The syllabus constitutes no part of the opinion of the Court but has been prepared by the Reporter of Decisions for the convenience of the reader.See United States v. Detroit Timber & Lumber Co., 200 U. S. 321 .
SUPREME COURT OF THE UNITED STATES

WYETH v. LEVINE
certiorari to the supreme court of vermont
No. 06–1249. Argued November 3, 2008—Decided March 4, 2009

Petitioner Wyeth manufactures the antinausea drug Phenergan. After a clinician injected respondent Levine with Phenergan by the “IV-push” method, whereby a drug is injected directly into a patient’s vein, the drug entered Levine’s artery, she developed gangrene, and doctors amputated her forearm. Levine brought a state-law damages action, alleging, inter alia, that Wyeth had failed to provide an adequate warning about the significant risks of administering Phenergan by the IV-push method. The Vermont jury determined that Levine’s injury would not have occurred if Phenergan’s label included an adequate warning, and it awarded damages for her pain and suffering, substantial medical expenses, and loss of her livelihood as a professional musician. Declining to overturn the verdict, the trial court rejected Wyeth’s argument that Levine’s failure-to-warn claims were pre-empted by federal law because Phenergan’s labeling had been approved by the federal Food and Drug Administration (FDA). The Vermont Supreme Court affirmed.

Held: Federal law does not pre-empt Levine’s claim that Phenergan’s label did not contain an adequate warning about the IV-push method of administration. Pp. 6–25.

(a) The argument that Levine’s state-law claims are pre-empted because it is impossible for Wyeth to comply with both the state-law duties underlying those claims and its federal labeling duties is rejected. Although a manufacturer generally may change a drug label only after the FDA approves a supplemental application, the agency’s “changes being effected” (CBE) regulation permits certain preapproval labeling changes that add or strengthen a warning to improve drug safety. Pursuant to the CBE regulation, Wyeth could have unilaterally added a stronger warning about IV-push administration, and there is no evidence that the FDA would ultimately have rejected such a labeling change. Wyeth’s cramped reading of the CBE regulation and its broad assertion that unilaterally changing the Phenergan label would have violated federal law governing unauthorized distribution and misbranding of drugs are based on the fundamental misunderstanding that the FDA, rather than the manufacturer, bears primary responsibility for drug labeling. It is a central premise of the Food, Drug, and Cosmetic Act (FDCA) and the FDA’s regulations that the manufacturer bears responsibility for the content of its label at all times. Pp. 11–16.

(b) Wyeth’s argument that requiring it to comply with a state-law duty to provide a stronger warning would interfere with Congress’ purpose of entrusting an expert agency with drug labeling decisions is meritless because it relies on an untenable interpretation of congressional intent and an overbroad view of an agency’s power to pre-empt state law. The history of the FDCA shows that Congress did not intend to pre-empt state-law failure-to-warn actions. In advancing the argument that the FDA must be presumed to have established a specific labeling standard that leaves no room for different state-law judgments, Wyeth relies not on any statement by Congress but on the preamble to a 2006 FDA regulation declaring that state-law failure-to-warn claims threaten the FDA’s statutorily prescribed role. Although an agency regulation with the force of law can pre-empt conflicting state requirements, this case involves no such regulation but merely an agency’s assertion that state law is an obstacle to achieving its statutory objectives. Where, as here, Congress has not authorized a federal agency to pre-empt state law directly, the weight this Court accords the agency’s explanation of state law’s impact on the federal scheme depends on its thoroughness, consistency, and persuasiveness. Cf., e.g., Skidmore v. Swift & Co., 323 U. S. 134 . Under this standard, the FDA’s 2006 preamble does not merit deference: It is inherently suspect in light of the FDA’s failure to offer interested parties notice or opportunity for comment on the pre-emption question; it is at odds with the available evidence of Congress’ purposes; and it reverses the FDA’s own longstanding position that state law is a complementary form of drug regulation without providing a reasoned explanation. Geier v. American Honda Motor Co., 529 U. S. 861 , is distinguished. Pp. 17–25.

___ Vt. ___, 944 A. 2d 179, affirmed.

Stevens, J., delivered the opinion of the Court, in which Kennedy, Souter, Ginsburg, and Breyer, JJ., joined. Breyer, J., filed a concurring opinion. Thomas, J., filed an opinion concurring in the judgment. Alito, J., filed a dissenting opinion, in which Roberts, C. J., and Scalia, J., joined.

Justice Stevens, Opinion of the Court

NOTICE: This opinion is subject to formal revision before publication in the preliminary print of the United States Reports. Readers are requested to notify the Reporter of Decisions, Supreme Court of the United States, Washington, D. C. 20543, of any typographical or other formal errors, in order that corrections may be made before the preliminary print goes to press.
SUPREME COURT OF THE UNITED STATES

WYETH, PETITIONER v. DIANA LEVINE
on writ of certiorari to the supreme court ofvermont
[March 4, 2009]

Justice Stevens delivered the opinion of the Court.

Directly injecting the drug Phenergan into a patient’s vein creates a significant risk of catastrophic consequences. A Vermont jury found that petitioner Wyeth, the manufacturer of the drug, had failed to provide an adequate warning of that risk and awarded damages to respondent Diana Levine to compensate her for the amputation of her arm. The warnings on Phenergan’s label had been deemed sufficient by the federal Food and Drug Administration (FDA) when it approved Wyeth’s new drug application in 1955 and when it later approved changes in the drug’s labeling. The question we must decide is whether the FDA’s approvals provide Wyeth with a complete defense to Levine’s tort claims. We conclude that they do not.

I

Phenergan is Wyeth’s brand name for promethazine hydrochloride, an antihistamine used to treat nausea. The injectable form of Phenergan can be administered intramuscularly or intravenously, and it can be administered intravenously through either the “IV-push” method, whereby the drug is injected directly into a patient’s vein, or the “IV-drip” method, whereby the drug is introduced into a saline solution in a hanging intravenous bag and slowly descends through a catheter inserted in a patient’s vein. The drug is corrosive and causes irreversible gangrene if it enters a patient’s artery.

Levine’s injury resulted from an IV-push injection of Phenergan. On April 7, 2000, as on previous visits to her local clinic for treatment of a migraine headache, she received an intramuscular injection of Demerol for her headache and Phenergan for her nausea. Because the combination did not provide relief, she returned later that day and received a second injection of both drugs. This time, the physician assistant administered the drugs by the IV-push method, and Phenergan entered Levine’s artery, either because the needle penetrated an artery directly or because the drug escaped from the vein into surrounding tissue (a phenomenon called “perivascular extravasation”) where it came in contact with arterial blood. As a result, Levine developed gangrene, and doctors amputated first her right hand and then her entire forearm. In addition to her pain and suffering, Levine incurred substantial medical expenses and the loss of her livelihood as a professional musician.

After settling claims against the health center and clinician, Levine brought an action for damages against Wyeth, relying on common-law negligence and strict-liability theories. Although Phenergan’s labeling warned of the danger of gangrene and amputation following inadvertent intra-arterial injection,1 Levine alleged that the labeling was defective because it failed to instruct clinicians to use the IV-drip method of intravenous administration instead of the higher risk IV-push method. More broadly, she alleged that Phenergan is not reasonably safe for intravenous administration because the foreseeable risks of gangrene and loss of limb are great in relation to the drug’s therapeutic benefits. App. 14–15.

Wyeth filed a motion for summary judgment, arguing that Levine’s failure-to-warn claims were pre-empted by federal law. The court found no merit in either Wyeth’s field pre-emption argument, which it has since abandoned, or its conflict pre-emption argument. With respect to the contention that there was an “actual conflict between a specific FDA order,” id., at 21, and Levine’s failure-to-warn action, the court reviewed the sparse correspondence between Wyeth and the FDA about Phenergan’s labeling and found no evidence that Wyeth had “earnestly attempted” to strengthen the intra-arterial injection warning or that the FDA had “specifically disallowed” stronger language, id., at 23. The record, as then developed, “lack[ed] any evidence that the FDA set a ceiling on this matter.” Ibid.

The evidence presented during the 5-day jury trial showed that the risk of intra-arterial injection or perivascular extravasation can be almost entirely eliminated through the use of IV-drip, rather than IV-push, administration. An IV drip is started with saline, which will not flow properly if the catheter is not in the vein and fluid is entering an artery or surrounding tissue. See id., at 50–51, 60, 66–68, 75. By contrast, even a careful and experienced clinician using the IV-push method will occasionally expose an artery to Phenergan. See id., at 73, 75–76. While Phenergan’s labeling warned against intra-arterial injection and perivascular extravasation and advised that “[w]hen administering any irritant drug intravenously it is usually preferable to inject it through the tubing of an intravenous infusion set that is known to be function-ing satisfactorily,” id., at 390, the labeling did not con-tain a specific warning about the risks of IV-pushadministration.

The trial record also contains correspondence between Wyeth and the FDA discussing Phenergan’s label. The FDA first approved injectable Phenergan in 1955. In 1973 and 1976, Wyeth submitted supplemental new drug applications, which the agency approved after proposing labeling changes. Wyeth submitted a third supplemental application in 1981 in response to a new FDA rule governing drug labels. Over the next 17 years, Wyeth and the FDA intermittently corresponded about Phenergan’s label. The most notable activity occurred in 1987, when the FDA suggested different warnings about the risk of arterial exposure, and in 1988, when Wyeth submitted revised labeling incorporating the proposed changes. The FDA did not respond. Instead, in 1996, it requested from Wyeth the labeling then in use and, without addressing Wyeth’s 1988 submission, instructed it to “[r]etain verbiage in current label” regarding intra-arterial injection. Id., at 359. After a few further changes to the labeling not related to intra-arterial injection, the FDA approved Wyeth’s 1981 application in 1998, instructing that Phenergan’s final printed label “must be identical” to the approved package insert. Id., at 382.

Based on this regulatory history, the trial judge instructed the jury that it could consider evidence of Wyeth’s compliance with FDA requirements but that such compliance did not establish that the warnings were adequate. He also instructed, without objection from Wyeth, that FDA regulations “permit a drug manufacturer to change a product label to add or strengthen a warning about its product without prior FDA approval so long as it later submits the revised warning for review and approval.” Id., at 228.

Answering questions on a special verdict form, the jury found that Wyeth was negligent, that Phenergan was a defective product as a result of inadequate warnings and instructions, and that no intervening cause had broken the causal connection between the product defects and the plaintiff’s injury. Id., at 233–235. It awarded total damages of $7,400,000, which the court reduced to account for Levine’s earlier settlement with the health center and clinician. Id., at 235–236.

On August 3, 2004, the trial court filed a comprehensive opinion denying Wyeth’s motion for judgment as a matter of law. After making findings of fact based on the trial record (supplemented by one letter that Wyeth found after the trial), the court rejected Wyeth’s pre-emption arguments. It determined that there was no direct conflict between FDA regulations and Levine’s state-law claims because those regulations permit strengthened warnings without FDA approval on an interim basis and the record contained evidence of at least 20 reports of amputations similar to Levine’s since the 1960’s. The court also found that state tort liability in this case would not obstruct the FDA’s work because the agency had paid no more than passing attention to the question whether to warn against IV-push administration of Phenergan. In addition, the court noted that state law serves a compensatory function distinct from federal regulation. Id., at 249–252.

The Vermont Supreme Court affirmed. It held that the jury’s verdict “did not conflict with FDA’s labeling requirements for Phenergan because [Wyeth] could have warned against IV-push administration without prior FDA approval, and because federal labeling requirements create a floor, not a ceiling, for state regulation.” ___ Vt. ___, ___ 944 A. 2d 179, 184 (2006). In dissent, Chief Justice Reiber argued that the jury’s verdict conflicted with federal law because it was inconsistent with the FDA’s conclusion that intravenous administration of Phenergan was safe and effective.

The importance of the pre-emption issue, coupled with the fact that the FDA has changed its position on state tort law and now endorses the views expressed in Chief Justice Reiber’s dissent, persuaded us to grant Wyeth’s petition for certiorari. 552 U. S. ___ (2008). The question presented by the petition is whether the FDA’s drug labeling judgments “preempt state law product liability claims premised on the theory that different labeling judgments were necessary to make drugs reasonably safe for use.” Pet. for Cert. i.

II

Wyeth makes two separate pre-emption arguments: first, that it would have been impossible for it to comply with the state-law duty to modify Phenergan’s labeling without violating federal law, see Fidelity Fed. Sav. & Loan Assn. v. De la Cuesta, 458 U. S. 141, 153 (1982) , and second, that recognition of Levine’s state tort action creates an unacceptable “obstacle to the accomplishment and execution of the full purposes and objectives of Congress,” Hines v. Davidowitz, 312 U. S. 52, 67 (1941) , because it substitutes a lay jury’s decision about drug labeling for the expert judgment of the FDA. As a preface to our evaluation of these arguments, we identify two factual propositions decided during the trial court proceedings, emphasize two legal principles that guide our analysis, and review the history of the controlling federal statute.

The trial court proceedings established that Levine’s injury would not have occurred if Phenergan’s label had included an adequate warning about the risks of the IV-push method of administering the drug. The record contains evidence that the physician assistant administered a greater dose than the label prescribed, that she may have inadvertently injected the drug into an artery rather than a vein, and that she continued to inject the drug after Levine complained of pain. Nevertheless, the jury rejected Wyeth’s argument that the clinician’s conduct was an intervening cause that absolved it of liability. See App. 234 (jury verdict), 252–254. In finding Wyeth negligent as well as strictly liable, the jury also determined that Levine’s injury was foreseeable. That the inadequate label was both a but-for and proximate cause of Levine’s injury is supported by the record and no longer challenged by Wyeth.2

The trial court proceedings further established that the critical defect in Phenergan’s label was the lack of an adequate warning about the risks of IV-push administration. Levine also offered evidence that the IV-push method should be contraindicated and that Phenergan should never be administered intravenously, even by the IV-drip method. Perhaps for this reason, the dissent incorrectly assumes that the state-law duty at issue is the duty to contraindicate the IV-push method. See, e.g., post, at 8, 25. But, as the Vermont Supreme Court explained, the jury verdict established only that Phenergan’s warning was insufficient. It did not mandate a particular replacement warning, nor did it require contraindicating IV-push administration: “There may have been any number of ways for [Wyeth] to strengthen the Phenergan warning without completely eliminating IV-push administration.” ___ Vt., at ___, n. 2, 944 A. 2d, at 189, n. 2. We therefore need not decide whether a state rule proscribing intravenous administration would be pre-empted. The narrower question presented is whether federal law pre-empts Levine’s claim that Phenergan’s label did not contain an adequate warning about using the IV-push method of administration.

Our answer to that question must be guided by two cornerstones of our pre-emption jurisprudence. First, “the purpose of Congress is the ultimate touchstone in every pre-emption case.” Medtronic, Inc. v. Lohr, 518 U. S. 470, 485 (1996) (internal quotation marks omitted); see Retail Clerks v. Schermerhorn, 375 U. S. 96, 103 (1963) . Second, “[i]n all pre-emption cases, and particularly in those in which Congress has ‘legislated … in a field which the States have traditionally occupied,’ … we ‘start with the assumption that the historic police powers of the States were not to be superseded by the Federal Act unless that was the clear and manifest purpose of Congress.’ ” Lohr, 518 U. S., at 485 (quoting Rice v. Santa Fe Elevator Corp., 331 U. S. 218, 230 (1947) ).3

In order to identify the “purpose of Congress,” it is appropriate to briefly review the history of federal regulation of drugs and drug labeling. In 1906, Congress enacted its first significant public health law, the Federal Food and Drugs Act, ch. 3915, 34 Stat. 768. The Act, which prohibited the manufacture or interstate shipment of adulterated or misbranded drugs, supplemented the protection for consumers already provided by state regulation and common-law liability. In the 1930’s, Congress became increasingly concerned about unsafe drugs and fraudulent marketing, and it enacted the Federal Food, Drug, and Cosmetic Act (FDCA), ch. 675, 52 Stat. 1040, as amended, 21 U. S. C. §301 et seq. The Act’s most substantial innovation was its provision for premarket approval of new drugs. It required every manufacturer to submit a new drug application, including reports of investigations and specimens of proposed labeling, to the FDA for review. Until its application became effective, a manufacturer was prohibited from distributing a drug. The FDA could reject an application if it determined that the drug was not safe for use as labeled, though if the agency failed to act, an application became effective 60 days after the filing. FDCA, §505(c), 52 Stat. 1052.

In 1962, Congress amended the FDCA and shifted the burden of proof from the FDA to the manufacturer. Before 1962, the agency had to prove harm to keep a drug out of the market, but the amendments required the manufacturer to demonstrate that its drug was “safe for use under the conditions prescribed, recommended, or suggested in the proposed labeling” before it could distribute the drug. §§102(d), 104(b), 76 Stat. 781, 784. In addition, the amendments required the manufacturer to prove the drug’s effectiveness by introducing “substantial evidence that the drug will have the effect it purports or is represented to have under the conditions of use prescribed, recommended, or suggested in the proposed labeling.” §102(d), id., at 781.
As it enlarged the FDA’s powers to “protect the public health” and “assure the safety, effectiveness, and reliability of drugs,” id., at 780, Congress took care to preserve state law. The 1962 amendments added a saving clause, indicating that a provision of state law would only be invalidated upon a “direct and positive conflict” with the FDCA. §202, id., at 793. Consistent with that provision, state common-law suits “continued unabated despite … FDA regulation.” Riegel v. Medtronic, Inc., 552 U. S. ___, ___ (2008) (slip op., at 8) (Ginsburg, J., dissenting); see ibid., n. 11 (collecting state cases). And when Congress enacted an express pre-emption provision for medical devices in 1976, see §521, 90 Stat. 574 (codified at 21 U. S. C. §360k(a)), it declined to enact such a provision for prescription drugs.
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