Tonic is a 2021 Indian Bengali-language family 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).

Tonic marked the directorial debut of Avijit Sen, who had previously worked as an assistant director to Rajkumar Hirani.

Upon its premiere on 2 December 2021, Tonic opened to positive reviews and became a huge commercial success, eventually becoming the highest-grossing Bengali film of 2021.

The old couple plans a foreign trip and comes across a travel agent named Tonic, who later turns out to be a miracle maker in life.

It has been the official selection for Indian Panorama (Mainstream Cinema Section) in 53rd International Film Festival of India in Goa.