A popular science film about the creation of a new drug, from the moment a chemist determines, based on the composition of a substance, that it might have medicinal effects, to the moment it finds itself in the patient's hand
| Directing | František Vláčil | Director |
| Writing | Vladimír Sís | Idea |
| Writing | Vladimír Sís | Screenplay |
| Camera | Bedřich Jurda | Director of Photography |
| Sound | Emanuel Punčochář | Original Music Composer |
| Editing | Vlasta Plotěná | Editor |
| Production | Milan Hachla | Production Manager |
