Unilever has completed the purchase of GlaxoSmithKline’s health food unit in South Asia, including such canned brands as Horlicks malted milk drink. In the deal, first announced in 2018, Hindustan Unilever (HUL) will pay €3.3 billion (US$3.6bn) to merge with GSK Consumer Healthcare India and €169 million to purchase an 82 per cent stake in…