The pace of the film was so grueling that a doctor was brought onto the set to give a vitamin B complex injection to anyone who requested it (shots which Wyler and his family later suspected may have contained amphetamines).
Orang-orang dalam dari film tersebut menyatakan bahwa seorang dokter dikirim untuk memberikan suntikan vitamin B kepada siapapun yang memintanya (sorotan-sorotan yang Wyler dan keluarganya kemudian duga mengandung amfetamin).