OKOUBAKA 
  
  Bear in mind in cases of severe intoxication, (eg. Chemotherapy) 
  (DHU Homöopathisches Repertorium, HL. 2/95) 
  
 ONOSMODIUM 
  
  Small spot headaches with inability to correctly judge distances. 
  (Eddi TIELENS, HL. 3/93) 
  
 OPIUM 

  This is the hell of fear and pain, which drives the individual to seek out another fix, whatever the cost.  These babies are born asleep, drowsy; they do not suck with enough strength, fall asleep while nursing, and are slow to recover birth-weight.  Umbilical Hernia and constipation may be present.     (DG) 
  
 ORIGANUM 
  
  Mammary Cysts with swollen nipples. Painful, swollen Vulva, Uterine contractions.  Must have sex frequently.  Hyper-energetic, must spend it by running. 
  (Henk van HOOTEGEM, HL. 3/93) 
 
 OSCILLOCOCCINUM 

  During the winter, on becoming chilled or after contact with someone sick with the Flu, taking a dose of Oscillococcinum often stops illnesses short. 
    (DG)