The health ministry has formed a committee to consider raising the number of drugs deemed essential and subject to price caps.
Roche has already adapted its business model in India to increase affordable access to drugs and try to stave off trouble from India's patent authorities.
Pfizer and BioNTech said they have concluded phase 3 study of their mRNA-based COVID-19 vaccine candidate BNT162b2, meeting all primary efficacy endpoints.
Western drugmakers, including Pfizer Inc, Novartis AG, Roche Holding AG and Sanofi SA, covet a bigger share of the fast-growing Indian drugs market.
Ties between India and the United States have been strained in recent years because of trade policies and patent disputes.
Shares in Sun Pharmaceutical Industries fell by more than 5 per cent after the company settled a patent suit with Pfizer Inc related to its acid-reflux drug for $550 million.
India's Supreme Court in April rejected a patent for Novartis AG's cancer drug Glivec, saying it was an amended version of a known molecule called imatinib, setting the precedent for more such cases in the country.
The recall is the latest in a series of problems to hit Ranbaxy, which has had all its India factories stopped from sending drugs and ingredients to the United States.
It could also ease the burden on the 225 million women in developing countries, says Ari Altstedter.
The deal would involve Pfizer paying with 11.3 of its shares for each Allergan share.
Mathew Martoma, a former SAC Capital portfolio manager, faces 20 years in prison for securities fraud and five years for conspiracy
My goal is to implement the Sevak project all over India and make the villages true Gandhian villages -- self sustainable in every way, including health, says Dr Thakor Patel, head of the American Association of Physician of Indian Origin's Public Health Committee. Aziz Haniffa reports