In 2015, ATNAHS added Naprosyn (naproxen) to their portfolio of heritage brands

In 2015, ATNAHS acquired the global rights to one of the most renowned brands in recent decades. Naprosyn (naproxen) from Roche.

Naprosyn (naproxen) is a non-steroidal inflammatory drug (NSAID) indicated as an oral treatment for rheumatoid arthritis, osteoarthrosis (degenerative arthritis), ankylosing spondylitis, acute gout, acute musculoskeletal disorders, juvenile rheumatoid arthritis and dysmenorrhoea.1 Naprosyn (naproxen) was first launched in the UK in 1976 by Syntex.2

A top 100 medicine in the US in 20184

Scientist with glasses

By 1987, worldwide sales of Naprosyn and Anaprox were estimated at nearly $600 million.3 Twenty years later, the Naprosyn molecule naproxen was one of the top 100 medicines most prescribed in the US with 11.9 million prescriptions.4

In the UK, in 2019, naproxen sales were ranked 37th with 6.9 million prescriptions, with a market value of £93.3 million.5

Scientist in a lab

Projected NSAIDs global sales: $24.35 billion by 20276

Global sales of NSAIDs (including Naprosyn) are forecast to reach $24.35 billion by 2027 exhibiting a compound annual growth rate (CAGR) of 5.8% during this period.6 Of these global NSAID sales, naproxen is forecast to represent 5% of the market.7


All of the information presented above is factual historical information that is available in the public domain and is included in good faith. It is not the intention to make any new or fresh claims nor to be promotional for the product in question.


  1. Naprosyn 250mg tablets, Summary of Product Characteristics.
  2. Brutzkus JC, et al. Naproxen - StatPearls - NCBI Bookshelf. Available from [Last accessed January 2021].
  3. The Pink Sheet. Available from [Last accessed January 2021].
  4. Naproxen Drug Usages Statistics, United States, 2008–2018. Available from [Last accessed January 2021].
  5. NHSBSA Statistics. Available from,from%201.109%20billion%20in%202018 [Last accessed January 2021].
  6. Fortune Business Insights. Available from -USD-24-35-Billion-by-2027-Surging-Research-on-Selective-Cyclooxygenase-2-Inhibitors-to-Boost-Growth-Fortune-Business-Insights.html [Last accessed January 2021].
  7. IQVIA US Market information, data on file – 2020 Atnahs.

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