Pharma BD Deal Intelligence

Merck & Co. Inc. / Schering-Plough Corp.

2009 · Acquisition/Merger · $41.1B · Complete

The Organon afterthought that Merck barely noticed became pharma's biggest jackpot: pembrolizumab (Keytruda) turned into the best-selling drug in history, bailing out a $41.1B deal whose headline rationale—Remicade, Zetia/Vytorin, a "five-star" pipeline of golimumab, Saphris, Bridion, vorapaxar, and boceprevir—mostly cratered, with Zetia/Vytorin sales dropping ~40% in 2017 alone after patent expiry.

CALLED IT — OFF BY 6
Full analysis, sources & comparables →
Top 10 largest deals of the 2000s

Ranks computed across 828 graded deals (Critic + Outcome Score both present).

The coverage arc

Mar 09, 2009 SEC Filing - Merck/Schering-Plough Neutral

Merck and Schering-Plough announced a definitive merger agreement valued at $41.1 billion structured as a reverse merger to preserve joint venture rights to…

Mar 19, 2009 Illinois Business Law Journal Bullish

The deal will result in billions in annual savings for the merged entity, with expected annual cost reductions of $3.5 billion and expanded geographic reach…

Source summaries from our enrichment pipeline; follow links for originals.

All 7 sources with sentiment breakdown →

Merck acquired Schering-Plough in a $41.1 billion reverse merger, gaining a diversified portfolio including Remicade, Nasonex, and the Vytorin/Zetia cholesterol franchise, creating the second-largest pharmaceutical company globally at the time.

Key facts

Disease & market context

Hyperlipidemia / Cardiovascular

73M US cases/yr · $15.0B Global Cholesterol Market (2009)

Disease Overview

Vytorin/Zetia franchise was the Merck/SP JV's largest asset. Zetia first-in-class cholesterol absorption inhibitor.

Competitive Landscape

ENHANCE controversy damaged Vytorin; IMPROVE-IT validated ezetimibe. Both went generic. Ezetimibe remains SOC add-on.

Respiratory / Allergy

50M US cases/yr · $8.0B Global Allergic Rhinitis (2009)

Disease Overview

Nasonex was SP's blockbuster intranasal steroid. Combined with Merck's Singulair for dominant allergy portfolio.

Portfolio Synergies

Nasonex + Singulair = two allergy blockbusters. Clarinex added OTC potential. Generic competition within years.

Inflammatory / Autoimmune Diseases

1.5M US cases/yr · $25.0B Global Anti-TNF Market (2009)

Disease Overview

Merck acquired Schering-Plough for $41.1B in 2009, doubling late-stage pipeline. Remicade (shared with J&J) at $5.3B global revenue was the crown jewel.

Competitive Landscape

Remicade competed with Humira and Enbrel. Biosimilar erosion post-2017.

Oncology / Hepatitis

24K US cases/yr · $3.0B Global Temodar + HCV (2009)

Disease Overview

Temodar was SOC for glioblastoma. PegIntron leading HCV treatment before DAAs.

Lifecycle

Temodar generic 2013. PegIntron displaced by DAAs (Sovaldi/Harvoni) 2014.

Deal timeline

Related deals — scored

DealYearValueOutcome
Merck & Co. Inc. / Schering-Plough Corp. (this deal)2009$41.1B69
Merck & Co. Inc. / Acceleron Pharma Inc.2021$11.5B90
Merck & Co. Inc. / Peloton Therapeutics Inc.2019$2.2B88
Merck & Co. Inc. / AstraZeneca PLC2017$8.5B87
Merck & Co. Inc. / Moderna, Inc.2022$250M86
Merck & Co. Inc. / Moderna, Inc.2016$250M84
Merck & Co. Inc. / Eisai Co., Ltd.2018$5.8B83

Compare all 7 side-by-side →

See the full interactive analysis, sources & comparables →