The fair trade regulator's approval comes after the first ever public scrutiny carried out by it for a merger, which was announced in April and would create India's largest and world's fifth biggest drug-maker.
In an order released today, the Competition Commission of India (CCI) said that it "approves the proposed combination ... Subject to the parties carrying out the modification to the proposed combination".
Similarly, Ranbaxy would be required to divest all products containing Leuprorelin which are marketed and supplied under the Eligard brand name, among others. In all, six products will have to be divested by Ranbaxy and one by Sun.
According to the fair trade watchdog, the modification to the proposed deal aims "to maintain the existing level of competition in the relevant markets in India".
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This would need to be done through creation of a viable, effective, independent and long term competitor in the relevant markets pertaining to the divestment products, CCI said in the order.
The combined entity would have operations in 65 countries, 47 manufacturing facilities across 5 continents, and a significant platform of speciality and generic products marketed globally.