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M&As in pharma can boost revenues and save money, but not necessarily for the public

Mergers and acquisitions can reduce marketing costs but also lead to drug price increases.

April 23, 2026

When two pharmaceutical companies announce a merger, they often tout the benefits: combined capabilities, improved R&D under one roof, greater efficiencies and savings for patients.

Yet research finds this only to be partly true, as evidenced by a study published in the Journal of Marketing Research by Vardit Landsman and Stefan Stremersch. In an analysis of 375 drugs targeted in M&A deals, they find that M&As do indeed create efficiencies, specifically in marketing, but that these efficiencies do not result in lower drug prices.

The M&A mindset

Mergers and acquisitions are major ways for firms to increase revenues and total market share in many industries. They are particularly appealing in the pharmaceutical industry, where firms that own legacy drugs that are approaching the “patent cliff” (when key patents expire) will often acquire other firms to diversify their portfolios. In 2023, pharma, medical and biotech accounted for 15% of M&A value across all industries, amounting to some $472 billion.

The most obvious reason for M&As in pharma is to improve R&D, but there are marketing benefits, too. Pharma is an industry that depends heavily on direct-to-physician promotion, known as “detailing,” in which sales representatives visit doctors to promote their portfolio of drugs to prescribing physicians. Companies dedicate considerable marketing resources to this effort, so amalgamating portfolios to have sales reps promote a wider range of drugs on the same visit makes sense.

Landsman and Stremersch put a number on it, finding that there is a reduction in detailing spend following a merger, amounting to $3.18 million per drug across the sample studied in the two years following the deal.

This is partly because of the streamlining of portfolios. It can also be due to firms with experience of certain kinds of drugs knowing how to market them well and having strong existing relationships with key physicians. This allows firms to cut spending while growing revenues: Among the 375 branded drugs studied, acquiring firms generated over $23 billion more in revenues in the two years following a deal, while spending over $1 billion less on detailing than in the two years prior.

Do consumers benefit from corporate cost-saving following a merger?

Pharma companies often claim these savings will be passed on to patients, but the research did not back this up. Indeed, drug prices tend to rise after mergers and acquisitions.

Vardit Landsman

Professor of Marketing at IESE Business School, specializing in the intersection of strategy, decision-making and empirical modeling.