New Delhi, Aug. 18 -- Diageo's Indian subsidiary United Spirits has agreed to reformulate some of its whisky and rum brands to comply with food-safety requirements, a move that could force wider changes across the country's spirits industry, where similar flavouring practices have been used for years.

United Spirits, which makes McDowell's, Royal Challenge, Antiquity Blue and McDowell's No. 1 Celebration Matured XXX Rum, said late Monday that it would align its products with the Food Safety and Standards Authority of India's (FSSAI) revised requirements, after the regulator raised concerns over the use of flavouring substances in select brands.

"Our products have consistently met all applicable safety and quality standards. We have enga...