Sonig replaces Umang Vohra, who is moving out of the organisation and has consequently stepped down from the position, Dr Reddy's Laboratories said in a filing to the BSE.
"Alok Sonig, Executive Vice President & Head India Generics will now take over as Executive Vice President & Head North America Generics," it added.
Besides, M V Ramana, who is currently Executive Vice President-Emerging Markets, has assumed additional charge and is now Executive Vice President & Head Branded Markets (India and emerging countries), the Hyderabad-based firm said.