In re Tylenol (Acetaminophen) Marketing, Sales Practices & Products Liability Litigation

144 F. Supp. 3d 699, 2015 WL 7075916
CourtDistrict Court, E.D. Pennsylvania
DecidedNovember 13, 2015
DocketMDL NO. 2436; 2:13-md-02436; Civil Action No. 2:12-cv-07263
StatusPublished
Cited by5 cases

This text of 144 F. Supp. 3d 699 (In re Tylenol (Acetaminophen) Marketing, Sales Practices & Products Liability Litigation) is published on Counsel Stack Legal Research, covering District Court, E.D. Pennsylvania primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
In re Tylenol (Acetaminophen) Marketing, Sales Practices & Products Liability Litigation, 144 F. Supp. 3d 699, 2015 WL 7075916 (E.D. Pa. 2015).

Opinion

[703]*703ME MORANDUM

Stengel, District Judge

This case is part of a Multidistrict Litigation (MDL) involving claims of liver damage from the use of Tylenol at or just above the recommended dosage.1 This is the first “bellwether” scheduled for trial.2 The plaintiff claims that her sister died of acute liver failure after taking Extra Strength Tylenol “as directed” by its label.3 She asserts that defendants Johnson & Johnson and McNeil — the makers of Tylenol — knew or should have known that consumers may develop acute liver failure after taking Extra Strength Tylenol at or just above the recommended dose, yet failed to warn users of this risk.

The defendants moved for summary judgment on the plaintiffs failure-to-warn claim, arguing that the plaintiff has not offered sufficient evidence of this claim and/or the claim is preempted by federal law. For the reasons explained below, I will deny the defendants’ motion.

[704]*704I. A HISTORICAL OVERVIEW OF TYLENOL4

The plaintiffs claims are different from those previously asserted against the defendants about the safety of Tylenol. While previous cases have questioned whether Tylenol can cause liver damage, this case and others in this MDL question the extent of such damage and the quickness with which it can occur. A historical overview of the regulation and science of Tylenol is helpful in explaining the plaintiffs claims.

a. TYLENOL, ACETAMINOPHEN, AND LIVER DAMAGE 5

Extra Strength Tylenol is an over-the-counter (OTC) pain reliever; consumers do not need a prescription to buy it. The active ingredient in Extra Strength Tylenol is acetaminophen, which is an analgesic and antipyretic or pain reliever and fever reducer.6 Defendant McNeil manufactures and markets many different Tylenol products, including Extra Strength Tylenol and Regular Strength Tylenol. The two products differ in that one tablet of Extra Strength Tylenol contains 500 mg of acetaminophen while a tablet of Regular Strength Tylenol contains only 325 mg of acetaminophen per tablet. Johnson & Johnson is the parent company of McNeil and is involved in managing its operations.

Acetaminophen was first synthesized as a pain reliever in the 1890s and has been available OTC since the 1960s.7 Tylenol is one of more than 600 acetaminophen-containing products on the market in the United States in OTC and prescription formulations.8 Acetaminophen is one of the most widely used OTC drugs.9 Twenty percent of Americans — 60 million people— ingest an acetaminophen-containing product each week.10 The Food and Drug Ad[705]*705ministration (FDA), which regulates OTC drugs, has found acetaminophen to be a “safe and effective OTC analgesic” when taken in recommended doses and used according to the label.11 However, acetaminophen has been known to cause severe liver damage.12

i. Acetaminophen’s Link to Acute Liver Failure

Acetaminophen is different from other OTC pain relievers in two ways: 1) it is the only one to have an antidote, and 2) its maximum total daily limit is the same for both OTC and prescription products.13 Acetaminophen is a “dose-related toxin,” meaning it can be safely used at certain doses but harmful at higher doses.14 As a result, there is evidence that it has a “narrow therapeutic margin” — i.e., there is lit-tie difference between the- current maximum recommended dose of acetaminophen and the doses that could cause liver injury.15 The parties debate how narrow this margin is.

A simplistic explanation of how the body metabolizes acetaminophen helps frame the issues in this case. Typically, gluta-thione — an antioxidant found in the liver— will bind to the toxic parts of acetaminophen, to neutralize them and prevent them from harming the body.16 These neutralized toxins are then excreted.17 However, if the body does not have enough gluta-thione, those toxins can build up in the liver,- causing acute liver failure (ALF). Glutathione stores may be low when a person is malnourished or when the liver has been neutralizing a lot of toxins at once.18

[706]*706■ “Acute liver failure (ALF) is a rapid deterioration of the organ’s ability to function.” 19 Patients who experience ALF can fall into a coma or die.20 They may require a liver transplant.21 A person who has recovered from ALF may still be at risk of redeveloping it, if the person again consumes too much acetaminophen.22

If acetaminophen-induced ALF is recognized quickly, acetaminophen’s antidote (N-acetylcysteine or NAC) can be given to a patient to supply glutathione and prevent or decrease liver injury.23 However, persons who have developed ALF from an unintentional acetaminophen overdose may not realize their liver injury because symptoms of ALF are not readily apparent or may look like the symptoms the acetaminophen is being used to treat (i.e., flu symptoms).24

ii. FDA Actions to Address Acetaminophen-Induced Acute Liver Failure

The majority of acute liver failure eases in the United States are related to the use of acetaminophen.25 Each year, acetaminophen is responsible for hundreds of deaths and liver transplants, in addition to tens of thousands of hospitalizations.26 These acetaminophen-induced liver injury patients include both people who are intentionally trying to harm themselves (i.e., attempting suicide) and those who take acetaminophen for therapeutic reasons (i.e., to treat physical pain).27 There is evidence that patients [707]*707taking acetaminophen at 4 g per day — the recommended maximum daily dose until recently — may be at risk of developing acute liver'failure.28

Medical literature began questioning the safety of acetaminophen at or just above therapeutic levels as far back as the 1980s.29 During the 1990s, members of the medical community continued to raise concerns about acute liver failure occurring in patients at or even lower than the maximum daily dose of 4 grams.30 Throughout this same time period, McNeil was also actively engaged in' research and development of a drug or combination of ingredients that would reduce or eliminate acetaminophen’s potentially toxic effects on the liver.31

In 2002, the FDA convened an Advisory Committee to discuss ways to prevent liver injury caused by unintentional acetaminophen overdose.32 During the .Committee Meeting, the FDA presented findings from medical literature: 1) that hepatotoxicity may occur “at recommended doses of APAP,” 2) that such cases were linked to risk factors such as alcohol use and/or fasting, and 3) that some cases of unintentional overdose led to death.33

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Related

Greager v. McNeil PPC, Inc.
N.D. Illinois, 2019
Al Haj v. Pfizer Inc.
338 F. Supp. 3d 741 (E.D. Illinois, 2018)
Al Haj v. Pfizer Inc
N.D. Illinois, 2018

Cite This Page — Counsel Stack

Bluebook (online)
144 F. Supp. 3d 699, 2015 WL 7075916, Counsel Stack Legal Research, https://law.counselstack.com/opinion/in-re-tylenol-acetaminophen-marketing-sales-practices-products-paed-2015.