Answer
Illness, feeding difficulties or cholestatic liver disease can make oral absorption unreliable. Some maternal medicines also make an injectable formulation more appropriate at birth.
Sources for this answer
- Konakion MM Paediatric / Phytomenadione 2 mg/0.2 ml solution for injection — Current selected SmPCemc · Summary of Product Characteristics
- Neokay 1mg Capsules — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.