Tonic is a 2021 Indian Bengali-language adventure drama film directed by Avijit Sen, produced by Atanu Raychaudhuri and distributed jointly by Bengal Talkies and Dev Entertainment Ventures. The film revolves around an elderly couple, portrayed by Paran Bandopadhyay and Shakuntala Barua, who get to enjoy a fresh lease of life through their tourist guide, Tonic (Dev).