The board of censorship gave this movie an Q certificate, it means Quality movie. Dard Ka Rishta is the only movie which was given this type of certificate by the censor board.
The profit of this film was donated to cancer related charities. Sunil Dutt made this film to reflect the tough time he had during Nargis's illness.
There was speculation that Sunil Dutt was going to remarry to actress Padmini (Of Mera Naam Joker fame). Just because she acted in a film after a long time and Sunil Dutt shot a few scenes in her New Jersey house. This angered a grief-stricken Sunil who was mourning the death of Nargis.
Johny Lever was launched in this film in a brief role.
Despite being one of the busiest heroines of the time with 14 releases to her credit that year, Reena Roy made a special concessions to act in a brief role in the movie. This was her way of showing gratitude to Sunil Dutt who had been instrumental in getting her several big movies when she was a struggling actress - Paapi, Zakhmee, Umar Qaid and even Nagin. Rumours were also rife that she had an affair with him in the mid 70's.