The possible merger is part of a strategic review of GSK’s Indian Horlicks business and other consumer healthcare nutrition products.
READ: Unilever in exclusive talks to acquire GlaxoSmithKline's Indian Horlicks nutrition business - report
GSK did not provide any further details about the merger.
Unilever is understood to be a leading bidder in the race to buy the Indian Horlicks business, according to the Financial Times on Wednesday.
However, Indian newspaper Times of India reported that Swiss consumer products rival Nestlé SA is close to buying Horlicks and other Glaxo consumer healthcare assets.