Thanmathra ( Malayalam: തന്മാത്ര, English: Molecule) is a 2005 Malayalam drama film written and directed by Blessy, based on Padmarajan's short story "Orma", which portrays the effects of Alzheimer's disease on the life of an individual and his family. The film collected three times than its cost and completed 150 days run. Thanmathra received five Kerala state film awards for the Best Film, Best Actor, Best Director, Best Screenplay and a special mention for the debutant actor Arjun Lal.