Schedule M Amendment Aligns Grade A Limits With WHO Norms

India's rulebook for medicine factories is being pulled closer to global practice. On 4 November 2026 the Ministry of Health and Family Welfare made public a proposal to amend Schedule M of the Drugs Rules, 1945, rewriting the microbial limits that apply inside the cleanest zones of a sterile medicine plant.

What has been proposed

The draft came through a gazette notification numbered G.S.R. No. 953(E), dated 28 October 2026. It revises the permitted levels of microbial contamination for Grade A clean areas so that India's figures sit alongside what the World Health Organization asks for. The WHO text being matched is its Technical Report Series (TRS) No. 1044, and within it Annexure 2, which carries Good Manufacturing Practices, or GMP, for sterile pharmaceutical products.

Why a Grade A zone is special

Grade A is the tightest cleanliness grade used in sterile manufacturing. It covers the critical spaces where a product still lies open, where empty containers wait to be filled, and where components that have already been sterilised are handled before sealing. A single stray organism picked up at that moment can pass directly into an injection or an eye drop, which is why air and surfaces in these zones are policed harder than anywhere else in the plant.

The gap being closed

Until now the numbers written into Schedule M and the numbers in the WHO requirement for Grade A did not agree. The ministry says the amendment is meant to settle that difference and put Indian regulatory provisions in step with standards recognised internationally. The draft goes one step further: it carries the WHO position that any microbial growth found in a Grade A area is itself a trigger for investigation, instead of being weighed against a tolerance figure.

What happens next

Because this is a proposal and not yet law, the ministry has invited objections and suggestions from the industry and from the public. They are to reach the Under Secretary (Drugs Regulation) at the Ministry of Health and Family Welfare in New Delhi, or the drugs division by e-mail, and the notification itself can be read in the Official Gazette.

The larger picture

The government frames the move as part of a steady tightening of quality standards in pharmaceutical manufacturing, with domestic rules written against international benchmarks so that the quality and safety of medicines made in the country can be relied upon.