The Busybody(1961)

Original title: Le Tracassin ou Les Plaisirs de la ville

André Loriot works for Dr Clairac in a laboratory producing euphoric pills. He searches in vain for an apartment where he can settle down and start a family with the woman who loves him, Juliette. To motivate himself and cope with the setbacks he encounters, he decides to swallow an excessive dose of euphoriants.