Sun Pharmaceutical Industries Ltd. was established by
Dilip Shanghvi in 1983 in Calcutta, West Bengal with five
psychiatry products and a two-person marketing team. Sun Pharma was listed on the stock exchange in 1994 in an issue that was oversubscribed 55 times. The founding family continues to hold a majority stake in the company. In 1998, Sun acquired a number of respiratory brands from
Natco Pharma. It acquired Melmet Labs (1999), Pradeep Drug Company (2000), Phlox Pharma (2004), a formulation plant in the US and Hungary from Valeant Pharma and Able Labs (2005), and Chattem Chemicals (2008). In 2012, Sun announced acquisitions of two US companies:
DUSA Pharmaceuticals, a dermatology device company; and generics business of URL Pharma. In 2014, Sun Pharma entered into a licensing agreement with
Merck & Co. Inc. to acquire rights for
Tildrakizumab (MK- 3222) for treatment of chronic plaque psoriasis. To access sterile injectable capacity in the US, it acquired Pharmalucence in the US in the same year. On 6 April 2014, Sun Pharma announced the acquisition of
Ranbaxy Laboratories in a US$4 billion transaction to create the world's fifth-largest specialty generic pharmaceutical company by sales. In December 2014, the
Competition Commission of India approved Sun Pharma's $3.2 billion bid to buy Ranbaxy Laboratories, but ordered the firms to divest seven products to prevent adverse impact on market competition. In March 2015, Sun Pharma announced it had agreed to buy
GlaxoSmithKline's opiates business in Australia. In 2016, Sun Pharma acquired 14 prescription brands from
Novartis in Japan to enter the Japanese market. It also acquired Ocular Technologies to strengthen its branded ophthalmic portfolio and Biosintez to enhance its presence in the Russian market. Sun Pharma launched its first branded ophthalmic product in the US, BromSite in 2016. In 2017, the company launched its specialty product
Odomzo and then in 2018 another specialty product
Ilumya (tildrakizumab-asmn) was launched to treat moderate-to-severe plaque psoriasis. In 2019, Sun Pharma acquired Pola Pharma in Japan to strengthen its global dermatology presence. The company entered the Greater China market by partnering with China Medical System Holdings as well as launched a speciality product,
Cequa, in the United States for the treatment of
dry eyes. In 2023, Sun Pharma acquired a late-stage American biotechnology company Concert Pharmaceuticals, and a 60% stake in animal healthcare company Vivaldis Animal Health and Foods. In September 2023, Sun Pharma went into a licensing agreement with Pharmazz Inc. In January 2024, Sun Pharma entered into a definitive merger with Taro Pharmaceuticals to acquire the remaining stake in Taro Pharma for $347.73 million. In March 2025, it was announced Sun Pharma had acquired the
Waltham, Massachusetts headquartered immunotherapy and targeted oncology treament company, Checkpoint Therapeutics for $355 million. ==SPARC==